Force, Work, Power and Pressure

What is force?

• A force can cause a stationary object to move

• A force can cause a moving object to move more quickly

• A force can cause a moving object to move more slowly

• A force can cause a moving object to change direction

What is the unit used to measure force?

• Kilogram

• Newton

• Gram

• Meter

What does weight measure?

• The amount of matter in an object

• The force pulling an object towards the center of the Earth

• The force that causes an object to spin

What is the formula to convert mass to weight?

• weight (in newtons) = mass (in kilograms) × 10

• weight (in kilograms) = mass (in newtons) × 10

• weight (in newtons) = mass (in kilograms) ÷ 10

• weight (in kilograms) = mass (in newtons) ÷ 10

How does weight change as an object rises above ground level?

• Weight remains constant

• Weight increases

• Weight decreases

• Weight becomes zero

What is the moment of a force?

• The force that causes an object to move

• The force that causes an object to change direction

• The force that causes an object to spin

• The force that causes an object to stop

What is a lever?

• A device to increase the effectiveness of a force

• A device to decrease the effectiveness of a force

• A device to change the direction of a force

• A device to stop the motion of a force

What is pressure?

• The force exerted by an object

• The weight of an object

• The force per unit area

• The distance traveled by an object

How do you calculate pressure?

• Force × Distance

• Force ÷ Distance

• Force × Area

• Force ÷ Area

What are the units used to measure pressure?

• N/cm2 or N cm−2

• N/m2 or N m−2

• Pascal (Pa)

• All of the above