Physics I Review

Front

What is the unit for force?

Back

Newton

Front

Determine the momentum of a 1000-kg car moving northward at 20 m/s.

Back

20000 kg * m/s north

Front

The change in an object's position, or the distance between the start and end points, is best described as:

Back

Displacement

Front

What is Newton's Third Law?

Back

For every action there is an equal and opposite reaction.

Front

What is the unit for mass?

Back

kg

Front

What is the formula for calculating force?

Back

Force = mass x acceleration

Front

Define velocity.

Back

Velocity is the speed of an object in a given direction.

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).

Front

What is the principle of conservation of momentum?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event.

Front

What is kinetic energy?

Back

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