Exploring Forces and Energy Quiz

You use a pulley to raise the block because it is easier to _____ down on the rope than it is to _____ the object upward.

• push, pull

• pull, push

Which of the following is an example of a contact force?

• Gravitational force

• Magnetic force

• Frictional force

• Electrostatic force

What is the unit of force?

• Joule

• Newton

• Watt

• Pascal

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

• Lever

• Pulley

• Inclined plane

• Screw

What type of energy is stored in a stretched rubber band?

• Kinetic energy

• Thermal energy

• Chemical energy

• Elastic potential energy

According to Newton's first law of motion, an object at rest will stay at rest unless acted upon by a:

• Balanced force

• Unbalanced force

• Gravitational force

• Magnetic force

Which of the following is an example of kinetic energy?

• A book on a shelf

• A moving car

• A compressed spring

• A charged battery

What is the mechanical advantage of a lever if the effort arm is 4 meters and the load arm is 2 meters?

• 1

• 2

• 3

• 4

Which of the following is an example of a non-contact force?

• Friction

• Tension

• Gravity

• Normal force

What is the formula for calculating work done when a force is applied to move an object?

• Work = Force × Distance

• Work = Mass × Acceleration

• Work = Force × Time

• Work = Mass × Velocity