A car traveling at 110km/hr strikes a tree. The front end of the car compresses

Question

A car traveling at 110km/hr strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.8m.
Part A: what was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of 'g' s' where 1.00g=9.8m/ square seconds. Express your answer using two signficant digits

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Explanation / Answer

Part A]

Velocity of the car = u = 110 km/hr = 30.555 m/s

S = 0.8m

v = 0 m/s

so, a = (0 - 30.5552)/2(0.8) = - 583.526 m/s2

a = - 583.526/9.8 = - 59.5g = - 60g.

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