Physics Midterm Review

Front

What is power in physics?

Back

Power is defined as the rate at which work is done.

Front

What is the sum of kinetic energy and all forms of potential energy called?

Back

The sum of kinetic energy and all forms of potential energy is known as mechanical energy.

Front

What is a hypothesis?

Back

A proposed explanation for a phenomenon that can be experimentally tested.

Front

How do you calculate net force?

Back

Net force can be calculated using the formula: Net Force = mass × acceleration.

Front

What is a scalar quantity?

Back

A scalar is defined as having a magnitude but no direction.

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 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 formula for calculating work?

Back

Work is calculated using the formula: Work = force × distance × cos(θ).

Front

What is Newton's second law of motion?

Back

Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is the unit of power?

Back

The unit of power is the Watt (W), which is equivalent to one Joule per second.