Friction is defined as:

• The force that opposes the relative motion or tendency of such motion of two surfaces in contact.

• The force that acts at a distance between two objects.

• The energy required to move an object from one place to another.

• The speed at which an object moves in a specific direction.

The term 'Gear' is defined as:

• a rotating machine part having cut teeth or cogs

• a type of lever

• a hydraulic device

• an electrical component

An inclined plane is defined as:

• A flat surface that is tilted at an angle to the horizontal

• A complex machine with multiple moving parts

• A type of lever used to lift heavy objects

• A tool used for cutting materials

Mechanical Advantage is defined as the ratio of which of the following?

• Output force to input force

• Input force to output force

• Distance moved by effort to distance moved by load

• Distance moved by load to distance moved by effort

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

• work

• energy

• force

• momentum

Pressure is defined as the force exerted per unit area.

• True

• False

A pulley is a simple machine used to:

• lift heavy loads

• measure temperature

• calculate speed

• store energy

Velocity is defined as the rate of change of ________ with respect to time.

• speed

• displacement

• acceleration

• force

Viscosity is defined as the measure of a fluid's resistance to flow.

• The measure of a fluid's resistance to flow

• The speed at which a fluid flows

• The temperature at which a fluid boils

• The color of a fluid

A 'Wedge' is defined as:

• a simple machine that consists of two inclined planes

• a type of lever used to lift heavy objects

• a tool used to measure angles

• a device for fastening objects together