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May 29, 2015

Homework Help: physics

Posted by Amy on Friday, January 4, 2008 at 6:57am.

1)Top-fuel drag racers are able to uniformly accelerate at 12.3 m/s2 from rest to 98 m/s before crossing the finish line. How much time elapses during the run?

2)A racecar accelerates from rest at +7.2 m/s2 for 4.1 seconds. How fast will it be going at the end of that time?

3)A bullet accelerates at 6.8 X 10^4 m/s2 from rest as it travels the 0.80 m of a rifle barrel. What is the velocity of the bullet as it leaves the barrel?

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