Review of Forces

Front

What is a non-contact force?

Back

A force that acts on an object without physical contact, such as gravity.

Front

What is gravity?

Back

A force that attracts two bodies toward each other, depending on their masses and the distance between them.

Front

Why doesn’t the Earth move when an object falls?

Back

The Earth has a very large mass and a small acceleration, which means it doesn't move significantly.

Front

What happens to a falling object in the presence of air resistance?

Back

It experiences a force that opposes its motion, affecting its speed and acceleration.

Front

What is the effect of mass on acceleration according to Newton's 2nd law?

Back

The greater the mass of an object, the less acceleration it will have when a force is applied (F=ma).

Front

What is an unbalanced force?

Back

A force that causes an object to change its state of motion, such as starting to move, stopping, or changing direction.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the formula for Newton's 2nd law?

Back

F = ma (Force equals mass times acceleration).

Front

What is air resistance?

Back

A type of friction that acts against the motion of an object moving through air.

Front

What happens when two objects of different masses fall in a vacuum?

Back

They hit the ground at the same time, regardless of their mass.