Question

A boy pulling a cart by a force of 100n. The frictional force experienced by the cart is 20n. The force that causes the motion of the cart is?

Answer 1

The net force that is causing the motion of the cart is 80 N.

Explanation:

We are given that:

• Force on the cart = 100 N
• The frictional force experienced b the cart = 20 N
• To Find: The force that moves the car = ?

Solution:

Net force = Normal force - frictional force

Net force = 100 N - 20 N

Net force = 80 N

Thus the net force that is causing the motion of the cart is 80 N

Answer 2

Given:

Force applied = 100N

Friction force = 20N

To find:

The force that causes the motion of the cart is?

Solution:

Net force = Force applied - Friction force

Net force = 100N - 20N

Net force = 80N

Therefore, the force that causes the motion of the cart is 80N.

More Information:

Force

• Force is defined as a push or a pull
• Force is a vector quantity
• Force has magnitude and direction

Friction

Force that opposes the motion of an object, when the object is in contact with another object or surface is called Frictional Force.

It slows down or stops the motion of an object.