Question

2) Car A goes from 0 to 65mile/hr in 10 seconds. Car B goes from 0 to 65 mile/hr in 12 seconds. 2a) car A has the same acceleration as car B (T, F)
2B) car A has greater acceleration than car B (T, F)

Answer 1

Answer:

Acceleration of car A is greater than the acceleration of car B

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

Equation of motion

$v=u+at\\\Rightarrow a=\frac{v-u}{t}\\\Rightarrow a=\frac{\frac{65}{2.237}-0}{10}\\\Rightarrow a=2.9\ m/s^2$

$v=u+at\\\Rightarrow a=\frac{v-u}{t}\\\Rightarrow a=\frac{\frac{65}{2.237}-0}{12}\\\Rightarrow a=2.42\ m/s^2$

Hence, the acceleration of car A is greater than the acceleration of car B