Question

A body of mass 1 kg undergoes a change of velocity of 4m/s in 4s what is the force acting on it? ​

Answer 1

Answer:

The force acting on it is 1 N.

Explanation:

Given:

• A body of mass 1 kg undergoes a change of velocity of 4 m/s in 4 s.

To find:

We are asked to find the force acting on it.

Solution:

We know that,

Acceleration = Change in velocity/time

So, acceleration = 4/4 = 1 m/s²

Now according to Newton's second law

F = m*a

⟹ F = 1 × 1

⟹ F = 1 N

Therefore, the force acting on it is 1 N.

Answer 2

GIVEN:

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀∆v = 4m/s

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀t = 4s

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀m = 1kg

Acceleration is given by a = ∆v/t

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀a = 1m/s²

NOW, force is given by

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀F = ma

⠀⠀⠀⠀⠀⠀⠀⠀F = 1N