Question #1014

The brochure advertising a sports car states that the car can be moving at 100.0 km/h, and stop in 37.19 meters. What is its average acceleration during a stop from that velocity? Express your answer in m/s2. Consider the car's initial velocity to be a positive quantity.

Expert's answer

From the equations of the motion:

v_{0 }= at;

t = v_{0}/a;

S = v_{o}^{2}/2a ;

100 km/h = 27.78 m/s;

27.78^{2}/2a = 37.19;

a = 10.37 m/s

v

t = v

S = v

100 km/h = 27.78 m/s;

27.78

a = 10.37 m/s

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