An automobile travelling at a speed of 60 miles/hr = 88 ft/s is 232ft from a bar

Question

An automobile travelling at a speed of 60 miles/hr = 88 ft/s is 232ft from a
barrier when the driver steps on the brake pedal. Four secondslater, the car
hits the barrier.

a) Assume that the deceleration of the car was constant from thetime the
brake was applied until the collision with the barrier. What wasthis
deceleration (in ft/s2)?

b) How fast was the automobile moving just before it hit thebarrier? Giveyour answer in ft/s.

if you can, as much explanation using EQUATIONS and DRAWINGS wouldbe helpful thank you!

Explanation / Answer

Initial speed u = 88 ft / s

Distance S = 232 ft

Final velocity v = 0

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