Question

An object has a uniform acceleration of 3m/s* At a certain time its velocity is 10m/s What was velocity 2sec earlier

Answer 1

A2A

v=u+atv=u+at

Here, u=10ms−1u=10ms−1, a=3ms−2a=3ms−2, t=−2st=−2s, v=?v=?

Therefore, v=10–3×2=4ms−1