Question

A train starts from rest and accelerated uniformly at the rate of 2m/s2 for 10sec calculate the velocity of the train in 10 sec

Answer 1

Required Answer :

• The final velocity of the train = 20 m/s²

Given :

• Initial velocity of the train = 0 m/s [Initial velocity of the train is zero because the train was initially at rest.]

• Acceleration of the train = 2 m/s²

• Time = 10 seconds

To find :

• Final velocity of the train in 10 seconds

Solution :

Here, we shall use the first equation of motion to find the final velocity of the train.

First equation of motion :-

• v = u + at

where,

• v denotes the final velocity
• u denotes the initial velocity
• a denotes the acceleration
• t denotes the time taken

we have,

• v = ?
• u = 0 m/s
• a = 2 m/s²
• t = 10 s

Substituting the given values :-

→ v = (0) + (2)(10)

→ v = 2 × 10

→ v = 20

Therefore, the final velocity of the train = 20 m/s²