Question

A powerful motor cycle can accelerate from rest to 28 m/s in only 4 seconds.what is its average accelerate?

Answer 1

Given that u= 0 m/s, v = 28 m/s, t = 4 s , a = ?

v = u + at

28 = 0 + a x 4

4 a = 28 => a= 7 m/s^2

Therefore the average acceleration = 7 m/s^2