Question

What happens when the net force applied on an object is opposite to the direction of its motion?

• A. The speed of the object decreases.
• B. The speed of the object increases.
• C. The speed of the object first increases and then decreases.
• D. The speed of the object doesn't change.

Answer 1

The correct option is A

The speed of the object decreases.

If the net force applied on an object is opposite to the direction of its motion, its speed decreases. For example, the speed of a ball throws upwards decreases until it reaches the highest point. Here, direction of motion is upwards and gravitational force is downwards.