All right. Question 11 asks to convert the following record speeds so that they're in miles per hour, kilometers per hour and meters per second. So if the party ritual the Australian dragon fly, I can fly surprising at 36 miles per hour. So start with this one. It's a freezing here and we want every one of these speeds again. Miles per hour climbers, power and meters per second. So for party, Amy want first good informers per hour. So we start with 36 miles per hour. Our time unit miles. We don't want to change, but we need to change. Um, our distance measurement miles, We know that that means we need one mile in our numerator started denominator many kilometers on top. But we know that since miles are bigger than commoners, there are 1.609 kilometers per mile to double check our miles units cancel out and we're left with kilometers per hour. I finally answered It's 57.9 kilometers per hour. Great. Um, do you know though, however we do start with 36 that's two significant digits or finance or should be to Israel. That's 58 kilometers per hour. All right. And finally you need this and meters per second miles. So miles per hour. Sorry, I'm jumping the gun here. We wanted to heavy in meters per second, something we found in the first line. We saw that there's 1.69 kilometers per mile. Sophie multiplied by 1000. Know that there's one that 1609 meters per mile for one mile. It's a real love with meters per hour. So then you cancel our hours about seconds of the denominator. So one our top and 3600 seconds on the denominator so that just to check our units, um, are miles Cancel out our hours cancels out and we are left with meters per second. Which two significant digits would result in the distant, uh, velocity of 16 meters per second? That's part a part B. A similar idea, starting from starting with plumbers per hour. Excuse me. We bring in miles per hour and, um, meters per second. First we know that, Mommy. Okay, so live miles per hour first. So what? Miles on our new minor one mile again is 1.69609 Come on, Butters! Commers did it cancels out. We're left with miles per hour. Perfect! Let me get this time 23 significant digits because we're starting with three, we get a velocity of Syrian yet 217 miles per hour. This confused because it was very fast. But again, we're dealing with records here and I should know that this is the diving peregrine falcon. Speed is 304 young kilometers. Incredible! So that's the 1st 1 I'll do the 2nd 1 decided this time just so I have the room. So now we're going to meters per second, starting with 3 49 kilometers per hour to go from kilometers, two meters. You know that they're 1000 meters within one kilometre, canceling out a kilometer unit and read seconds. So you know that in one hour there are 3600 seconds again double checking your MRI. It's kilometres cancels own hours, cancels out and we do have meters per second as our unit and we find that this philosophy again 23 significant digits is 96.9 meters per second. Awesome! In part three, sir Curtsy! The Lockheed s R 71 jet aircraft travel about three times the speed of sound in 980 meters per second. Crazy so we can convert meters per 2nd 1st thing we'll do is to go to accomplish parameter. So like we said before any one kilometer, there are 1000 meters in well, hours of the denominators who know that in one hour there are 3600 seconds checking your Edith's, uh, hours fine, but HR. But still our seconds cancels meters cancels and we are left with kilometers per hour. We find this time to two significant figures because 9 80 has two significant digits here. 98 not the zero. Our final answer should represent that as well. We have 3.5 times 10 to the two kilometers per hour and if you calculate that, hopefully will be 35 28. But again, just so we're using the rates significant digits and finally I heard a meters per second is tangled miles per hour. So miles on her numerator one mile hasn't mentioned it party. Here's 1609 meters and in bum again, denominated needs one hour, our new better. There's 3600 seconds again. Just double checking your Eunice seconds. Cancels meters, cancels and you're in love with miles per hammer to two significant digits is 2.2 times 10 to the two two news? Yeah, exactly conducive to yeah, into the three. Excuse me, that's right into the three miles per hour that is the same. This also here should be tended. The three in the first part of the question. Excuse me. It was 3.5% 3 kilometers per hour because there's 3528 and similarly for parts seats 2.2 times 7 to 3 miles per hour.