Summer School Physical Science - CH 2 - Section II

Which of these objects is NOT accelerating?

• A plane slowing down to land

• A rocket taking off into space

• A hiker moving at the same speed for hours

• A rollerblader heading downhill

A stopped car begins moving and reaches a speed of 25m/s in 5 seconds. What is its acceleration?

• +25m/s²

• -0m/s²

• +5m/s²

• 5m/s

Assume each letter represents the line segment above it, which line segment has the highest (positive) acceleration?

• A

• B

• D

• E

Assume the letters represent the line segment above them, which line segment best describes an object slowing down?

• A

• B

• D

• E

Assume each letter represents the line segment above it. Which segment is an object that is stationary?

• A

• B

• D

• F

A truck slowing down to stop at a red light is an example of ____. 

• Speed
• Velocity
• Acceleration
• Direction

Turning a corner on a motorcycle is an example of ____. 

• Speed
• Velocity
• Acceleration
• Direction

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

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

Acceleration only takes place when things speed up. 

• True
• False