Answer to Question #1014 in Mechanics | Relativity for sabeen

Question

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.

Answer 1

From the equations of the motion:
v₀ = at;
t = v₀/a;
S = v_o²/2a ;
100 km/h = 27.78 m/s;
27.78²/2a = 37.19;
a = 10.37 m/s