Physics fall semester review

Front

What is the formula for calculating average speed?

Back

Average speed = Total distance / Total time.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity (p = mv).

Front

How does a collision affect momentum in a closed system?

Back

The total momentum of a closed system remains constant before and after a collision.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration.

Front

What happens to potential energy when an object's speed increases?

Back

Increasing the speed of an object does not affect its potential energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between electrical energy and mechanical energy?

Back

Electrical energy is energy from electric charges, while mechanical energy is the sum of potential and kinetic energy in an object.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of objects and converts kinetic energy into thermal energy.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).