Physical Science Semester Review

Front

The energy of an object that increases with its height.

Back

Gravitational potential energy is the energy an object possesses because of its position in a gravitational field.

Front

Which two quantities are measured in the same units?

Back

Weight and force are both measured in newtons (N).

Front

An object that is falling freely has a constant what?

Back

Acceleration due to gravity is constant at approximately 9.81 m/s².

Front

A horizontal (flat) line on a velocity vs. time graph shows ____ acceleration.

Back

Zero acceleration indicates that the object is moving at a constant velocity.

Front

Tendency of an object to resist changes in motion.

Back

Inertia is the property of matter that causes it to resist changes in its state of motion.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

What is the unit of force?

Back

The unit of force is the newton (N).

Front

What does a steep slope on a distance vs. time graph indicate?

Back

A steep slope indicates a high speed of the object.

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 mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.