Question

1. a bike increases its speed from 5 m/s to 15 m/s in 2 seconds. what is the bikes acceleration? 10 m/s 5 m/s² 7.5 m/s 2.5 m/s²

Explanation:

Step1: Identify initial and final speeds and time

Initial speed $u = 5$ m/s, final speed $v=15$ m/s, time $t = 2$ s.

Step2: Use acceleration formula

The formula for acceleration $a=\frac{v - u}{t}$. Substitute the values: $a=\frac{15 - 5}{2}=\frac{10}{2}=5$ m/s².

Answer:

B. $5$ m/s²