2nd Six Weeks Review

Front

What is the motion of an object that is not moving?

Back

The object is at rest and has no speed.

Front

What does it mean for forces to be balanced?

Back

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

Front

What happens to potential energy as an object moves up a ramp?

Back

Potential energy increases while kinetic energy decreases.

Front

How do you calculate net force when two forces are acting in the same direction?

Back

Add the magnitudes of the forces together.

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

Kinetic energy is the energy of an object in 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, often calculated as PE = mgh.

Front

What happens to the total energy of a system when an object falls?

Back

The total energy remains constant; potential energy decreases while kinetic energy increases.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes direction.

Front

What is an example of unbalanced forces?

Back

If one person pushes a car with 50 N to the right and another pushes with 30 N to the left, the forces are unbalanced.