Front

What is the direction of the vertical velocity of a ball projected horizontally off a cliff?

Back

downward

Front

If the net work done on an object is negative, what happens to the object's kinetic energy?

Back

The object's kinetic energy decreases.

Front

What is a vector quantity?

Back

A vector quantity has both magnitude and direction. Example: force.

Front

What is the initial horizontal velocity of a ball thrown horizontally from a height?

Back

The initial horizontal velocity is the same as the velocity it was thrown with.

Front

Does the weight of a block resting on an inclined plane change as the angle of incline increases?

Back

The weight of the block remains the same regardless of the incline angle.

Front

Define kinetic energy.

Back

Front

What is the formula for gravitational potential energy?

Back

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 energy?

Back

The total energy in a closed system remains constant; energy can neither be created nor destroyed.

Front

What is the formula for calculating work done?

Back