Scalar and Vector Quantities Revision

What is the main difference between scalar and vector quantities?

• Scalar quantities have both magnitude and direction, while vector quantities have only magnitude.

• Scalar quantities have only magnitude, while vector quantities have only direction.

• Scalar quantities have only direction, while vector quantities have both magnitude and direction.

• Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.

Which of the following is a scalar quantity? a) Velocity b) Force c) Acceleration d) Distance

• a

• b

• d

• c

Which of the following is a vector quantity? a) Mass b) Temperature c) Time d) Displacement

• c

• d

• b

• a

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

When adding scalar quantities, what operation is used?

• subtraction

• multiplication

• division

• addition

When adding vector quantities, what operation is used?

• scalar multiplication

• vector subtraction

• vector division

• vector addition

If a car travels 50 km north and then 30 km south, what is the total displacement?

• 80 km north

• 30 km north

• 20 km north

• 50 km south

If a person walks 5 meters east and then 3 meters west, what is the total displacement?

• -2

• 8

• 2

• 0

If a ball is thrown with a velocity of 20 m/s east and another ball is thrown with a velocity of 15 m/s west, what is the total velocity of the system?

• 35 m/s east

• 5 m/s west

• 20 m/s east

• 5 m/s east

If a car is moving at a speed of 60 km/h and another car is moving at a speed of 40 km/h in the opposite direction, what is the total speed of the system?

• 100 km/h

• 120 km/h

• 80 km/h

• 20 km/h

Which of the following is an example of a scalar quantity? a) Weight b) Displacement c) Velocity d) Acceleration

• b) Force

• None of the above

• a) Mass

• c) Power

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2