Question

A bear is sitting at rest on a tricycle. The bear then starts to accelerate uniformly at a rate of 2.5
m/s2. How long will it take the bear to reach a velocity of 15 m/s?

Answer 1

Answer:

15 m/s

Explanation:

Initial velocity, u = 0

Acceleration of bear, a = 2.5 m/s²

We need to find time taken by bear to reach a velocity of 15 m/s.

Acceleration is equal to the rate of change of velocity. So,

$a=\dfrac{v-u}{t}\\\\t=\dfrac{v-u}{a}\\\\t=\dfrac{15-0}{2.5}\\\\t=6\ s$

It will take 6 seconds to reach a velocity of 15 m/s.