Forces and Motion Flashcard Review

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, often caused by the contact between surfaces.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the force that pulls objects toward the Earth.

Front

What are balanced forces?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Unbalanced forces are not equal and can cause an object to start moving, stop moving, or change direction.

Front

How does mass affect motion?

Back

The more mass an object has, the more force is needed to change its motion.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What happens when two objects collide?

Back

When two objects collide, they exert forces on each other, which can change their motion.

Front

What is the effect of gravity on falling objects?

Back

Gravity causes falling objects to accelerate towards the Earth at a rate of approximately 9.8 m/s².

Front

What is the difference between speed and velocity?

Back

Speed is how fast an object is moving, while velocity includes both speed and direction.