Physical Science 11.3 & Velocity-Time Gizmo

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Multiple Choice

Which graph indicates that one of runners started 10 meters ahead of the other?

• A

• B

• C

• D

Multiple Choice

In which graph are both runners moving at the same velocity?

• A

• B

• C

• D

Multiple Choice

Which velocity-time graph matches the position-time graph?

Multiple Choice

Which sentence best describes the runner whose velocity-time graph is shown?

• The runner ran forward for 2 seconds, and then ran backward for 2 more seconds

• The runner ran forward for 4 seconds — slowly for the first 2 seconds, then more quickly for the last 2 seconds

• The runner ran forward for 4 seconds — quickly for the first 2 seconds, then more slowly for the last 2 seconds

• The runner stood still for 2 seconds, moved suddenly, and then stood still again for 2 more seconds

Multiple Choice

What is acceleration?

• the rate at which speed increases

• the time an object’s velocity increases

• the rate at which displacement changes

• the rate at which velocity changes

Multiple Choice

A sports car can accelerate from 0 m/s to 28 m/s in four seconds. What is the acceleration of the car?

• 24  s

• 7 m/s

• 27 m/s²

• 27 m/s

Multiple Choice

Which of the following is an example of negative acceleration?

• Mike starts riding his bike and uses the pedals to go from 0 km/h to 20 km/h

• Mike pedals up a hill and gradually slows from 20 km/h to 5 km/h

• Mike sits on his bike at the top of the hill and rests

• Mike coasts downhill without pedaling, going from 0 km/h to 15 km/h

Multiple Choice

The acceleration at a specific point on a distance-time graph is

• instantaneous acceleration

• momentary acceleration

• positive acceleration

• numerical acceleration

Multiple Choice

If an object experiences a steady velocity change in a straight line, it is undergoing constant acceleration

• true

• false