A non-contact force is a force that acts on an object without coming into contact with it. For a contact force to act on an object it must have physical contact with it. Gravitational force causes the football to fall back toward the ground after it is thrown. Is gravitational force a contact or non-contact force?

non-contact force

Explanation:

Gravitational force is considered a non-contact force because gravitational force does not require any physical contact with an object and it is an attractive force.

in the given example the football will fall back towards the ground without any physical contact between the ground and the ball and it is only the attractive force of gravity of the ground that pulling the ball back to the ground.

Hence, the correct answer is "gravitational force is a non-contact force".

they are made of gases.

they have a spherical shape.

they make energy through fusion.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds