Physical Quantities

Which quantity is not a scalar quantity?

• the age of earth

• mass of a football

• earth's pull on your body

• the temperature of an iron bar

Which of the following is a vector quantity?

• 5000 kg

• 10 m/s

• 120 km/h SE

• 45 hours

One of the factors that contribute to uncertainty is the skill of the person doing the measurement.

• TRUE

• FALSE

Which of the following position-time graphs describes an object that is at rest?

• Graph A

• Graph B

• Graph C

• both Graphs A and B

A ______ is a quantity that has magnitude but no direction.