1- Two cars drive on a straight highway. At time t = 0 , car 1 passes mile marke
ID: 2270965 • Letter: 1
Question
1- Two cars drive on a straight highway. At time
t=0, car 1 passes mile marker 0 traveling due east with a speed of 16.0m/s . At the same time, car 2 is 1.2km east of mile marker 0 traveling at 28.0m/s due west. Car 1 is speeding up with an acceleration of magnitude 0.20m/s2 , and car 2 isslowing down with an acceleration of magnitude 0.50m/s2 .
*At what time do the cars pass next to one another?
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2- A model rocket rises with constant acceleration to a height of 3.0m , at which point its speed is 27.0m/s .
** Find the height of the rocket 0.20 s after launch. t= 0.22, a=120
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3- To find the height of an overhead power line, you throw a ball straight upward. The ball passes the line on the way up after 0.65
s , and passes it again on the way down 1.6s after it was tossed.
*** What is the height of the power line?
*** What is the initial speed of the ball?
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Explanation / Answer
1) time = 30.42sec
2) height= 2.4m
3) height=0.44m
initial velocity= 2.93m/s
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