To report the ____ of an object, we must specify both its speed and its direction .

• Speed

• Velocity

• Displacement

• Acceleration

The speedometer in your car tells you the ____ of your car.

• acceleration

• average speed

• instantaneous speed

• velocity

• inertia

Tags

NGSS.MS-PS3-1

The rate of change of an object’s velocity is

• Speed

• Acceleration

• Constant speed

• Displacement

Tags

NGSS.MS-PS2-2

An object that is neither speeding up nor slowing down is travelling at a

• Negative speed

• Constant speed

• Accelerating speed

• vector

In which of the following conditions does a car NOT accelerate?

• A car moves at 80km/hr on a flat, straight highway.

• The car slows from 80km/hr to 35 km/hr.

• The car turns a corner

• The car speeds up from 35 km/hr to 80 km/hr.

This is a graph of a student riding to school. What can you tell about the motion of the bike rider from point B to C?

• The rider is accelerating.

• The rider is returning at a constant speed.

• The rider is stationary.

• The rider has negative acceleration.

What can be said of the rider from point C to D?

• The rider is accelerating.

• The rider is moving back toward the start.

• The rider is moving forward at a constant speed.

• The rider is moving forward at a faster speed than from A to B.

Tags

NGSS.MS-PS3-1

What is the average speed of the rider?

• 0.18 km/min

• 5 km/min

• 45 km/min

• 50 km/min^2

Tags

NGSS.MS-PS3-1

What can you tell about the motion of the object from point B to point C?

• The object is moving at constant speed.

• The object is moving back toward the start.

• The object is experiencing positive acceleration.

• The object is experiencing negative acceleration.

Tags

NGSS.MS-PS3-1

Which of the following represents a stationary object on this graph?

• Point A-B

• Point B-C

• Point C-D

• Point D-E

Tags

NGSS.MS-PS3-1