Question

A force produces an acceleration of 2 m/s² when it acts on a body of mass 2 kg. Find the force acting on the body. 
1. 1 N
2. 2 N
3. 4 N
4. 8 N

Answer 1

Correct Answer - Option 3 : 4 N

CONCEPT:​

• Newton's second law: When a constant force acts on a body, it causes it to accelerate.

The acceleration (a) of the body is calculated by:

F = ma

where F is the force on the body, m is the mass of the body, and a is the acceleration.

CALCULATION:

Given that a = 2 ms-2; m = 2 kg; 

F = ma

F= 2 × 2

F = 4 N

So the correct answer is option 3.