Physics Midterm Review 2024

Front

As distance between two objects increases, what happens to the pull of gravity?

Back

The pull of gravity decreases.

Front

What is the SI unit for power?

Back

Watts.

Front

Does gravity affect weight?

Back

True.

Front

What type of waves can travel through empty space (vacuum) and travel as transverse waves?

Back

Electromagnetic waves.

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration (F = m*a).

Front

What is the law of conservation of energy?

Back

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

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

The energy stored in an object due to its position or state, calculated as PE = mgh.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).