Test: Speed, velocity & acceleration

Acceleration of an object happens when things ________

• slow down
• go faster
• change direction (turn)
• All of the above

Tags

NGSS.HS-PS2-1

The graph represents

• No motion
• Constant velocity
• Acceleration
• Deceleration

Calculate the average speed (in meter/sec) if a cheetah runs 180 meters in 10 seconds.

• 198 m/sec
• 170 m/sec
• 12 m/sec
• 18 m/sec

Tags

CCSS.6.EE.B.7

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

Tags

CCSS.8.EE.B.5

What is happening at C?

• Stationary

• Accelerating

• Fast steady speed; moving away from the starting position

• Slower steady speed; moving away from the starting position

• Cars 1 and 2 traveled the same distance before coming to a stop. 
• Car 2 traveled a greater distance in the first 4 seconds than Car 1. 
• Car 1 traveled a greater distance in the first 4 seconds than Car 2. 
• Cars 1 and 2 came to a stop after traveling for the same amount of time. 

The three vehicles shown are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity.

The pickup truck has a changing velocity because the pickup truck -

• can accelerate faster than the other two vehicles

• is traveling in the opposite direction from the other two vehicles

• is traveling on a curve in the road

• needs a large amount of force to move

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.

A distance vs. time graph shows an object's

• frame of reference
• speed
• acceleration
• favorite food

Tags

CCSS.HSF.IF.B.4

Change in speed over a given period of time is

• velocity
• motion
• speed
• acceleration