A car is capable of accelerating at 12.2 m/s^2 and will ram into a wall. The car

Question

A car is capable of accelerating at 12.2 m/s^2 and will ram into a wall. The car accelerates for 6.1 s until it reaches "ramming speed" After reaching ramming speed it drives at constant velocity for 3.8 s before smashing through wall and traveling 25 m further before coming to complete stop.

a. What is the acceleration of car from t=6.1 s to t=9.9s
b. How far does car travel from t= 6.1 s to t= 9.9 s
c. What is acceleration of car after it smashes into wall?
d. What is time for car to come to complete stop as it traveled the 25m further

Explanation / Answer

a) 0

b)12.2x6.1=74.42m/s

c)74.42^2=2ax25

a=-110.767m/s^2

d)0=74.42-110.767t

t=0.67s

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