An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +38 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. Assume the total distance traveled by the sled is 15750 ft and the total time is 90 s.(adsbygoogle = window.adsbygoogle || []).push({});

(a) Find the times t1 and t2.

t1

t2

(b) Find the velocity v.

ft/s

At the 15750 ft mark, the sled begins to accelerate at -21 ft/s2.

(c) What is the final position of the sled when it comes to rest?

ft

(d) What is the duration of the entire trip?

Please just show me how to do this. My entire weekend has consisted of me holed up in my basement doing physics. This is my last problem and I just want to feel happy and alive again :(

s

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# An ice sled powered by a rocket engine starts from rest on a large frozen lake and ac

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