Mass and Weight

The force of gravity acting on an object is called...

• Its mass

• Its weight

• Its downforce

Mass is ...

• A measure of the amount of matter in an object

• A force

• Measured in newtons, N

A force of 1N is approximately the force needed to lift?

• A sugar cube

• An apple

• A car

What is the gravitational field strength of Earth?

• 10 N/kg

• 1.6 N/kg

• 25 N/kg

How is weight calculated?

• Weight = mass x gravitational field strength

• Weight = gravitational field strength ÷ mass

• Weight = mass ÷ gravitational field strength

What is the weight of a 40 kg child on Earth (g= 10 N/kg)?

• 40 kg

• 4 N

• 400 N

A car has a weight of 10,000 N. What is the mass of the car on Earth (g= 10 N/kg)?

• 1000 kg

• 1000 N

• 10,000 kg

What is a newton meter?

• A unit for speed

• A calibrated spring-balance

• A unit for weight

Which of the following statements is false?

• Weight is a vector quantity

• Weight is measured in newtons, N

• The weight of an object is the same on the Earth and the moon

A girl has a weight of 88 N on the moon, where g = 1.6 N/kg. What is her mass?

• 55 kg

• 55 N

• 88 kg