Question

A train increases its speed from 80 km/h to 100 km/h in 4 s.
Find the acceleration of the train.​

Answer 1

Answer: u=80km/h

v=100km/h

t=4s

a=?

v=u+at

100=80+a×4

100-80=a×4

20/4=a

5=a

Acceleration is 5 m/s square.

Explanation:we got the answer by using the third equation of motion