Question

A train starts from rest and accelerate uniformly at the rate of 5 m/s2 for 5 sec. Calculate the velocity of train in 5 sec.

Answer 1

Initial velocity (u) = 0 m/s as it starts from rest.

Acceleration given(a) = 5 m/s²

Time given(t) = 5 seconds

We have to calculate final velocity(v)

Then by Newton's First equation of motion

v= u + at

v= 0 + 5×5

v= 25 m/s

Answer 2

Answer :-

Using the first equation of motion,

Using the first equation of motion,V = u + at

Given that the train starts from rest, which means that initial velocity of train (u) = 0 m/sec

So,

v = 0 + 5 × 5

Acceleration (a) = 5

Time (t) = 5

Velocity of train (v) = 25 m/sec