Force, energy, motion review

Front

What is the definition of force in physics?

Back

A force is a push or pull on an object that can cause it to change its velocity (speed or direction).

Front

What is the difference between balanced and unbalanced forces?

Back

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

Front

What happens to the motion of two colliding objects?

Back

The motion of the objects will change, which may include changes in speed and direction.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as gravitational potential energy.

Front

What is the role of friction in motion?

Back

Friction is a force that opposes the motion of an object, causing it to slow down or stop.

Front

What is a spring scale used for?

Back

A spring scale is a device used to measure force, typically in units of newtons, by the amount of stretch in a spring.

Front

How does gravity affect motion?

Back

Gravity is a force that attracts objects toward each other, affecting their motion by pulling them downward.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, which can occur due to changes in speed or direction.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.