5

SerPSE9 4.00.003. 0/1 Submissions UsedMy NotesAsk Your Teachestudent throws heatry red ball horizontally from balcony resistance which statement true? The blue ball...

Question

SerPSE9 4.00.003. 0/1 Submissions UsedMy NotesAsk Your Teachestudent throws heatry red ball horizontally from balcony resistance which statement true? The blue ball reaches the ground first;tall building with an initial speedthe same time; secono student drops lighter blue ball from the bal Icony. Neglecting JirThe balls reach the ground at the same InstaniThe red ball reaches the ground first. Both balls hit the ground with the same speed. None of the above statements true;Viemnd Savad Work Rav

SerPSE9 4.00.003. 0/1 Submissions Used My Notes Ask Your Teache student throws heatry red ball horizontally from balcony resistance which statement true? The blue ball reaches the ground first; tall building with an initial speed the same time; secono student drops lighter blue ball from the bal Icony. Neglecting Jir The balls reach the ground at the same Instani The red ball reaches the ground first. Both balls hit the ground with the same speed. None of the above statements true; Viemnd Savad Work Ravanto Last Response Submi Anetrer



Answers

At the edge of a roof you throw ball 1 upward with an initial speed $v_{0} ;$ a moment later you throw ball 2 downward with the same initial speed. The balls land at the same time. Which of the
following statements is true for the instant just before the balls hit
the ground? A. The speed of ball 1 is greater than the speed of ball 2; B. The speed of ball 1 is equal to the speed of ball $2 ; \mathrm{C}$ . The speed of ball 1 is less than the speed of ball 2.

We are asked if this function s represents the position of an object thrown from the ground at time to equal zero. Whether or not the velocity of the ball hitting the ground will be negative. Visa. Oh where we supposed the initial velocity? Well, this is what we know if it hits the ground, it's because the position is zero. So if we substitute zero in 4 position we have zero equals negative 16 T squared plus fees of OT. Which would lead us after we factor out a. T. To the equation zero equals T. Times negative 16 T plus Visa. Zero. The ball is going to hit the ground then when either this is zero or the second zero. Now the first number that zero and T. Is zero but that we knew that that was when the object was on the ground to begin with. So we're more interested in the second part because this is when it's traveled up in the air and then it's hit the ground. We could add the 16 T. And then divide by the 16th. So what we're finding is the ball hits the ground at a time of V. Subzero divided by 16 for the velocity of the ball. We do know the velocity is the derivative position. So the velocity is negative 32 T plus V sub zero. So if we use the time of V sub zero Over 16, that would mean the velocity is negative 32 times V Subzero over 16 plus V sub zero or negative to Visa zero plus V sub zero which ends up at negative Visa zero. So yes it will hit the ground with a velocity of negative the Subzero. That's true.

We have three balls which are thrown up at the same velocity V not, but they're thrown a different angles, one of them straight up. One of them's at a little bit of an angle from Vertical Williams at a large angle from vertical. And we want to know if they're thrown at the same speed, but at different angles. When they reached the same height indicated by this green line, which of thumb will have the smallest speed. So to answer this, we need Thio use conservation of energy So initially, there at a height of zero so they only have kinetic energy. 1/2 V I squared or V not squared. Let me write that down. Vino is equal to V I Just because I started writing it like that on Ben when they reach this height, they're gonna have some gravitational potential energy as well as some kinetic energy. So first thing we can do right off the bat to find the final velocity is actually divide both sides by M. Since all of the terms here have amassed in them. So then we get 1/2 V. I squared is equal to um is equal to sorry. No mass year because they'll cancel it. G h final, which is the height that they all all three of them reach at this point in time. Um, plus one half V f squared. So we want thio rearrange for VF. So, um, that gets us 1/2 The squared is equal to 1/2 V. I squared minus G h f. Now, this is actually enough to tell us which of them will be the slowest. But let's just to make things super obvious, multiply both sides by 1/2 Um, or multiply both sides by two. Rather so V squared is equal to V. I squared minus, um, to G h f and then take the square root of that two finds the final velocities equals square root of V. I squared minus two. She h f So what does the final velocity depend on? Um, G is a constant here. So all that the final velocity of a ball depends on is the initial velocity and the height that it reaches. So, Theo initial velocities were given are all the same and the heights that they reach, Um, you just label that, um h f is this dotted line. The heights they reach are also the same. So all the variables on the right hand side of the equation of the same for all three of the balls eso it does not depend on the angle of the velocity as long as the initial velocities are the same. There's also no mass term here because we canceled out maths in the very first step. So does not depend on Mass. So that tells us that the answer is, See, all three balls have the same final velocity because it doesn't depend on the angle of the initial velocity as long as those are the same and it doesn't depend on mass because we can't sell those out.

Okay, adam drops the ball from the top of the building and drops from rest to didn't have lost in the vertical direction. Sure. And You can shove us into her snow reductions also. zero. And the ball accelerates that. absolution of 9.81, It is the 2nd square. Now in the second case bob throws the ball horizontally So the Philistines and your horizontal direction is not zero P. X. It's great. And as your with the philistine D fresco direction, next user and the boston accelerates with the same acceleration of 9.81 seconds. But and regardless of the ot present velocity, the ball so accelerated is rate and rich tea and reach the ground at the same time. So the time is dependent on the and the philistine D. Terrorism in the vertical direction. I'm not the original direction. So the times for both to be the same, deported the ground at the same time, good same time option to see

Hello and welcome to this video solution of numerous. This question is based on the conservation of energy principles. Here we are given that you throw a ball up first and then catch it at the same height. Right? How does the final speed compared to the initial speed when there is no instance? And there is there instance? So let me draw a simple diagram first. So let's see here is a ball and you throw it up for it's great. So what happens? It will move up, it will reach some point and it will come back and here. Right, So at the final point we have equal to zero rate. So there is no velocity at that point and then it will come back to so what happens is the potential energy increases what this region, Right? And at the top most point at let's at a height age uh the whole energy converted to pure potential. Okay, so let's say at this point the velocity of the ball was fi and at the final velocity is 08 And and at that point we have only potential energy right now, when there is no air instance, that means the energy will remain cancel. Trade this potential energy, whatever it's they're right, we live in concert and when it comes down again here. So it will have the same fellow CTV which is actually converted from this potential energy called the kinetic energy, we can say at the lowest point. Right? So there is no change in velocity when there is no air instance. Right? So this is a party that both the velocities will remain sane. The initial throwing velocity and the final velocity of the world. Once you catch it, both of them will remain the same. Now part of it will be when there is a resistance. So when there is there instance, obviously the ball will not move to the site. Okay, that is mentioned earlier. So it will move somewhat. Let's like that. And it will fall now during falling. Also there is will be lost in in a great because the air will give opposite frictional force on the ball. Right? So since let's say the ball is moving upward, the air will give resistance downward. So it's try to reduce its velocity along its movement. So obviously let's say this is V one and V two, then obviously we do will be much, much less than we want. Thank you. It means a final velocity of the ball when you catch will be much lesser than the initial velocity of production. When there is a resistance. I hope this is clear to you uh, and have very good rest of the day. Thank you.


Similar Solved Questions

5 answers
DA polnt?je.0u3An54e n Wvanefh Ac78&.0u2lc NotzAsk YourIt Ravc S IlictIcFM#JiaraHE(Akculalxt+ iricJit At] 4J cr >Ability_ RcMAIE ur 4ntriot clecial Natk HINTFxample 3.]P(9)~7.Fird P(BP(D | 4) = Noed Help?
DA polnt ?je.0u3An54e n Wvanefh Ac78&.0u2 lc Notz Ask Your It Ravc S IlictIcFM #JiaraHE (Akculalxt+ iricJit At] 4J cr >Ability_ RcMAIE ur 4ntri ot clecial Natk HINT Fxample 3.] P(9) ~7.Fird P(B P(D | 4) = Noed Help?...
5 answers
13) Find the vclocitys spoed and scceleneion of te wrtor-rlued functioa I) = costi + sin tJ- I6pkat = {
13) Find the vclocitys spoed and scceleneion of te wrtor-rlued functioa I) = costi + sin tJ- I6pkat = {...
2 answers
Question 3 (2 points)147 -1.19 424 -0.97 0.7J 0.78 02J 1.19 0.84 0,63 0.1 ~0.45The Z-scores (X- mean)/SD for two variables X and Y are given above: Calculate the correlation coefficient between the two variables_-0.340.360.080.160.42
Question 3 (2 points) 147 -1.19 424 -0.97 0.7J 0.78 02J 1.19 0.84 0,63 0.1 ~0.45 The Z-scores (X- mean)/SD for two variables X and Y are given above: Calculate the correlation coefficient between the two variables_ -0.34 0.36 0.08 0.16 0.42...
5 answers
Study BookCHAFTER 4 ECCUDEAN CONSTRUCTIONPractice 8.2.2. Construct line segment congruent to a given line segment on a given lineMid / Final Project'
Study Book CHAFTER 4 ECCUDEAN CONSTRUCTION Practice 8.2.2. Construct line segment congruent to a given line segment on a given line Mid / Final Project'...
5 answers
1 tarctang y = 10 Differentiate 2 Mn 3arctan %
1 tarctang y = 10 Differentiate 2 Mn 3arctan %...
5 answers
4.A.23Vil I5 1 1 'Pays - Ju 1 0 52006l -btn
4.A.23 Vil I5 1 1 'Pays - Ju 1 0 5200 6l - btn...
5 answers
Given the RC circuit shownCalculate the equivalent capacitance, CacC, - 14FCalculate the equivalent resistance, Rce2 HFCz = 4 HFThe switch S is closed at t = 0.a) Calculate the current /(0) in the circuit at t=0100 [1200 n300 Qb) Calculate the voltage across Rz att= 0Calculate the voltage across Ri att = 0The switch S has been closed for a long time:Calculate the charge on C3, qa(co)b) Calculate the charge on C1, qi(co)Calculate the voltage across C1
Given the RC circuit shown Calculate the equivalent capacitance, Cac C, - 14F Calculate the equivalent resistance, Rce 2 HF Cz = 4 HF The switch S is closed at t = 0. a) Calculate the current /(0) in the circuit at t=0 100 [ 1200 n 300 Q b) Calculate the voltage across Rz att= 0 Calculate the voltag...
5 answers
12. What is the maximum volume of 6.0 M NaOH that can be added to 100.mL of buffer solution that is initially 1.00 M in acetic acid and 0.5O0 M in sodium acetate and still have buffer solution? K 1.8*10 for acetic acid:
12. What is the maximum volume of 6.0 M NaOH that can be added to 100.mL of buffer solution that is initially 1.00 M in acetic acid and 0.5O0 M in sodium acetate and still have buffer solution? K 1.8*10 for acetic acid:...
4 answers
Diagonalization _1 _2 2A 43~4~21Find D and P with A = PDP-1The matrix A is factored in the form PDP of A and the basis for each eigenspace-Find the eigenvalues-2~1 202 ~14 ~2
Diagonalization _1 _2 2 A 4 3 ~4 ~2 1 Find D and P with A = PDP-1 The matrix A is factored in the form PDP of A and the basis for each eigenspace- Find the eigenvalues -2 ~1 2 0 2 ~1 4 ~2...
5 answers
Suppose 250. mL flask is filled with 0.50 mol of Brz' 0.70 mol of OClz and 1,.3 mol of BrCl_ The following reaction becomes possible: Brz(g) + OClz BrOCl(g) + BrCl(g)The equilibrium constant K for this reaction is 0.451 at the temperature of the flask:Calculate the equilibrium molarity of BrOCl: Round your answer t0 two decimal places
Suppose 250. mL flask is filled with 0.50 mol of Brz' 0.70 mol of OClz and 1,.3 mol of BrCl_ The following reaction becomes possible: Brz(g) + OClz BrOCl(g) + BrCl(g) The equilibrium constant K for this reaction is 0.451 at the temperature of the flask: Calculate the equilibrium molarity of BrO...
1 answers
The air a room has a dry-bulb temperature }\end{array}$ of $75 F and a wet-bulb temperature of 65. Assuming a pressure of 14.3 psia, determine $(a)$ the specific humidity, (b) the relative humidity, and ( $c$ ) the dew-point temperature.
The air a room has a dry-bulb temperature }\end{array}$ of $75 F and a wet-bulb temperature of 65. Assuming a pressure of 14.3 psia, determine $(a)$ the specific humidity, (b) the relative humidity, and ( $c$ ) the dew-point temperature....
5 answers
Name and sketch the graph of each of the following equations in three-space.$$4 x^{2}+9 y^{2}+49 z^{2}=1764$$
Name and sketch the graph of each of the following equations in three-space. $$4 x^{2}+9 y^{2}+49 z^{2}=1764$$...
1 answers
Write each inequality as an equivalent inequality in which the inequality symbol points in the opposite direction. $$34 \leq 40$$
Write each inequality as an equivalent inequality in which the inequality symbol points in the opposite direction. $$34 \leq 40$$...
5 answers
To determine the concentration of chloride in a sample, 20ml ofthe sample were analyzed with AgNO3. The analysis created 1.095g ofAgCl. what was the concentration of chloride in the originalsample
to determine the concentration of chloride in a sample, 20ml of the sample were analyzed with AgNO3. The analysis created 1.095g of AgCl. what was the concentration of chloride in the original sample...
5 answers
If the thigh segment has coordinated end points of (2,7) and(5,3) what is the segments absolute angle relative to the righthorizontal?
If the thigh segment has coordinated end points of (2,7) and (5,3) what is the segments absolute angle relative to the right horizontal?...
5 answers
How long is the string? Express your answer to two significant figures and include the appropriate units
How long is the string? Express your answer to two significant figures and include the appropriate units...
5 answers
System is released from rest: Find final velocity of 12 kg block after 2.4 512 kg,H = 0.204.5 kg400
System is released from rest: Find final velocity of 12 kg block after 2.4 5 12 kg, H = 0.20 4.5 kg 400...
1 answers
Let X1 and X2 be two independent normalrandom variables with mean µ and variance σ2 .(a) Determine the distribution of the random variable(X1 −X2)2 /(2σ2).Explain your reasoning.(b) Show that(X1 −X2)2 /(2σ2) .is a pivotal quantity for σ 2 .(c) Carefully construct a confidence interval σ 2 using thequantity in (b).
Let X1 and X2 be two independent normal random variables with mean µ and variance σ2 . (a) Determine the distribution of the random variable (X1 − X2)2 /(2σ2). Explain your reasoning. (b) Show that (X1 − X2)2 /(2σ2) . is a pivotal quantity for σ 2 . (c) Carefully constru...

-- 0.026519--