Question

A motorcycle has a constant acceleration of 4.33 m/s². Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a)44.7 to 54.7 m/s, and (b)74.7 to 84.7 m/s?

Answer 1

Given:

$a=4.33\:\rm m/s^2$

The time required for the motorcycle to change its speed

$$\Delta t=\frac{\Delta v}{a}$$

(a)

$$\Delta t=\frac{54.7-44.7}{4.33}=2.31\:\rm s$$

(b)

$$\Delta t=\frac{84.7-74.7}{4.33}=2.31\:\rm s$$