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

15 m/s

Step-by-step 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=(v-u)/(t)\\\\t=(v-u)/(a)\\\\t=(15-0)/(2.5)\\\\t=6\ s`

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