TEST 1B-Speed, Velocity, Acceleration and Forces

Acceleration of an object happens when it ________

• slows down

• speeds up

• changes direction

• all of the these

Tags

NGSS.MS-PS2-2

When a car goes around a corner at 20 mph, why do we say it accelerates?

• The car is accelerating because of the velocity is constant

• The car accelerates because it's going 20 mph

• Cars always accelerate when they are in motion

• The car is accelerating because it's changing direction

The correct equation to calculate speed is

• distance ÷ time

• time/distance

• distance x time

• distance/time²

Tags

NGSS.MS-PS3-1

What is the difference between the velocity and the speed of an object?

• Velocity is a change in distance over time, speed is the change in direction over time
• Velocity has a direction associated with it, while speed has no specific direction
• Velocity has no direction associated with it, while speed has a specific direction.
• Velocity is the change in speed over time, while speed is the change in distance over time.

What is this graph showing? (6.8D)

• Constant Speed

• Acceleration (speeding up)

• Deceleration (slowing down)

• No motion

Tags

NGSS.MS-PS3-1

What is the speed of this object at 3 seconds?

• 5 m/s

• 45 m/s

• 5 s/m

• 45 s/m

Tags

NGSS.MS-PS3-1

Which runner stopped for a rest?

• Albert

• Bob

• Charlie

Which graph represents the greatest constant acceleration?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

Which graph shows acceleration?

• 
• 

Tags

NGSS.HS-PS2-1

Which graph shows a constant speed?

• 
• 

Tags

NGSS.MS-PS3-1