1-D motion and motion graphs

A change in velocity over time is

• Scalar
• Speed
• Acceleration
• Motion

Which is an example of zero acceleration?

• A merri-go-round moving at a constant rate
• A car coming to a stop
• A boat speeding up
• A person running on a treadmill at a rate of 6 MPH

A car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds.  What is the acceleration of the car?

• .5 m/s/s
• .5 m/s
• 2 m/s/s
• 2 m/s

During which interval is the object traveling at a constant velocity?

• B to C
• D to E
• F to G
• it traveling at a constant velocity during all of the intervals shown.

The change in an object's position, or the distance between the start and end points, is best described as:

• Distance
• Displacement
• Speed
• Velocity

Ramos runs around a football field. He runs 300 m around the entire field ONCE. If he starts and ends up at the northwest corner of the field, determine his distance and displacement.

• Distance = 0 m, Displacement = 0 m
• Distance = 300 m, Displacement = 0 m
• Distance = 0 m, Displacement = 300 m
• Distance = 300 m, Displacement = 300 m

A ball is rolled at a velocity of 12 m/sec.  After 36 seconds, it comes to a stop.  What is the   acceleration of the ball?

• 3 m/s/s
• -3 m/s/s
• .33 m/s/s
• -.33 m/s/s

A ball is tossed straight up into the air and falls straight back down. Neglecting air resistance, at what point is the acceleration the greatest?

• Just after it was thrown
• At the peak height
• Just before it lands
• The same everywhere

An object free falls for 3.5 seconds. About how far does it fall?

• 122 m

• 12 m

• 61 m

• 35 m

A golf ball accelerates off a tee at 15 m/s², changing its velocity from 0 m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

• 750 seconds
• 35 seconds
• 0.3 seconds
• 3.3 seconds