Motion In 1D Quiz 1

Velocity is...

• The rate of change of acceleration

• The rate of change of displacement

• The rate of change of distance

• The rate of change of speed

What is the acceleration of an object moving at constant velocity?

• 2 m/s²

• 1 m/s²

• 0 m/s²

• 0.8 m/s²

When velocity is positive and acceleration is positive, what happens to the object’s motion?

• The object slows down

• The object speeds up

• Nothing happens to the objects motion

• The object remains at rest

What is the difference between a vector quantity and a scalar quantity?

• A scalar has a magnitude and direction and a vector has only a magnitude

• A vector has a magnitude and direction and a scalar has only a magnitude

• A scalar has a direction and a vector has a magnitude

• None of the above

A toy car is given an initial velocity of 5 m/s and experiences a constant acceleration of 3 m/s². What is the final velocity after 5 seconds?

• 20 m/s

• 10 m/s

• 9 m/s

• 5 m/s

Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his DISTANCE?

• 10 mi

• 7 mi

• 8 mi

• 6 mi

Jasmine runs exactly 3 laps around a 400 meter track. What is the DISPLACEMENT?

• 800 m

• 400 m

• 0 m

• 1200 m

The change in an objects position from the final position to initial position.

• displacement

• distance

• motion

• reference point

A place or object used for comparison to determine if another object is in motion is called a

• comparison point
• reference point
• point of view
• motion detector

The velocity of an object increases from 30 m / s to 50 m / s in 5.0 seconds.

What is the average acceleration of the object?

• 0.10 m / s²

• 0.25 m / s²

• 4.0 m / s²

• 10 m / s²