Question

A force of 50N is required to push a car on a level road with constant speed of 10 m/s. The mass of the
car is 500 kg. The force that should be applied to make the car accelerate at 2m/s2 is :
(A) 1100 N (B) 1050 N (C) 1000 N (D) 1500 N

Answer 1

Required Answer :

The force that should be applied to make the car accelerate at 2 m/s² is :-

• Option (B) 1050 N

Given :

• Force required to push a car on a leavel ground = 50 N

• Initial velocity = 10 m/s

• Mass of the car = 500 kg

• Acceleration = 2 m/s²

To find :

• The force that should be applied to make the car accelerate at 2 m/s²

Solution :

• Force of friction = 50 N

Formula to calculate force when friction is also acting on the body :-

• F - friction = ma

Where,

• F denotes the force
• m denotes the mass
• a denotes the acceleration

Substituting the given values :-

→ F - 50 = 500 × 2

→ F - 50 = 1000

→ F = 1000 + 50

→ F = 1050

Therefore, the force = 1050 N