Dynamics Test Revision

Which one of the following contains the unit for acceleration?

• ms^-1

• km^-2

• ms^-2

• ms

A vector quantity has size and direction

• True

• False

A scalar quantity has size only

• True

• False

Vector and scalar quantities have no units.

• True

• False

The acceleration due to gravity is

• 9·8 ms^-1

• 8.9 ms^-1

• 9.8 ms^-2

• 340 ms^-2

This graph tells us that the object is:

• Accelerating

• Decelerating

• Constant Speed

This graph tells us that the object is:

• Accelerating

• Decelerating

• Constant Velocity

This graph tells us that the object is:

• Accelerating

• Decelerating

• Constant Velocity

A car travels 500 m north and then travels 400 m south. The distance traveled by the car is:

• 500m

• 400m

• 100m

• 900m

A car travels 500 m north and then travels 400 m south. The displacement of the car is:

• 100m North

• 100m South

• 500m

• 400m South