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

Given :-

Here, we have

Initial velocity, u = 0 (As train starts from rest)

Acceleration, a = 5 m/s²

Time taken, t = 5 seconds

To Find :-

Final velocity, v = ??

Solution :-

According to the 1st equation of motion,

We know that

v = u + at

So, putting all the values, we get

⇒ v = u + at

⇒ v = 0 + 5 × 5

⇒ v = 5 × 5

⇒ v = 25 m/s

Hence, the final velocity of train is 25 m/s.

And we done......!!

Answer 2

Answer:

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 and time, t=5

Velocity of train, v=25 m/sec