PS Unit 1 Review

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

What is this graph showing?

• The object is moving away from starting point at a constant speed

• The object is moving back towards the starting point at a constant speed

• The object is increasing its velocity

• The object is decreasing its velocity

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?

• 0 meters
• 400 meters
• 800 meters
• 1600 meters

Which segment shows the object getting closer to the starting point?

• A to B

• C to D

• B to C

• E to F

During which interval is the object speeding up?

• A to B
• B to C
• D to E
• E to F

At a track meet, Camille ran the 5000 meter race at an average speed of 6.0 meters per minute. How long did it take her to complete the race in minutes?

• 14 min

• 830 min

• 833 min

• 500 min

 Jermaine runs exactly 2 laps around a 400 meter track. What is the displacement?

• 800
• 400
• 0
• 200

During which interval is the object not moving?

• B to C
• C to D
• D to E
• only at point A

The picture of the position vs. time graph shows an object that is...

• speeding up

• moving at a constant speed

• not moving

• slowing down.

What does this graph represent?

• Constant speed
• Acceleration
• Not moving