Force and Motion

Front

What is force?

Back

A push or pull that can change the motion of an object.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, such as the Earth and the Moon.

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Forces that are not equal, causing a change in motion.

Front

What is friction?

Back

A force that opposes motion between two surfaces in contact.

Front

What happens when two objects exert equal forces in opposite directions?

Back

They do not move at all.

Front

What is inertia?

Back

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

Front

What is the effect of unbalanced forces on an object?

Back

They cause the object to accelerate or change direction.

Front

What is the role of Earth's gravity in the solar system?

Back

It keeps the planets, including the Moon, in orbit around the Sun.