OLSTEMGP21 Chapter 3 Kinematics

1. In addition to time, which of the following must be used for a more complete description of the average acceleration of an object?

• Mass

• Displacement

• Velocity

• None of these

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 bird flies 2 m/s. How far has the bird traveled after 1 min?

• 5 m

• 12 m

• 120 m

• 300 m

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

Which of the following is a vector quantity?

• Velocity

• Acceleration

• Displacement

• All of the above

What is the speed of an object at rest

• 0 m/s

• 1 m/s

• 9.8 m/s

• 10 m/s

A dolphin swims 1.2 km/hr. How far has the dolphin travelled after 0.525 hr?

• 1.1 km

• 2.5 km

• 0.63 km

• 3.7 km