What is the unit of work in the International System of Units (SI)?

• Newton

• Joule

• Watt

• Pascal

Which simple machine consists of a wheel with a rope or cable wrapped around it?

• Lever

• Pulley

• Inclined plane

• Screw

What is the term for the ratio of useful work output to total work input in a machine?

• Efficiency

• Mechanical advantage

• Power

• Force

Which simple machine is a flat surface set at an angle to another surface?

• Wedge

• Inclined plane

• Screw

• Lever

What is the term for the force multiplication factor provided by a machine?

• Efficiency

• Mechanical advantage

• Power

• Torque

What is required for work to be done on an object?

• Force must be applied and the object must move a distance.

• Only force must be applied.

• The object must be stationary.

• Energy must be transferred without movement.

How is work defined in terms of energy?

• Work is the creation of energy from nothing.

• Work is the transfer of energy from one object to another by applying force.

• Work is the destruction of energy.

• Work is the storage of energy in an object.

How much work is done when a 10 N force is applied to move a box by 2 meters?

• 5 Joules

• 10 Joules

• 20 Joules

• 25 Joules

What is the formula for calculating work?

• Work = Force + Distance

• Work = Force × Distance

• Work = Force / Distance

• Work = Distance / Force

What is the unit of work?

• Newton

• Joule

• Watt

• Pascal