9IGP55 Speed-Time Graphs

At what point is the speed the greatest?

• C-D

• B-C

• A-B

• D-E

A negative acceleration means that your object is _____.

• doing nothing

• moving in circles

• speeding up

• slowing down

What is happening during point A to B?

• not moving

• increasing speed at a constant rate

• moving at a constant speed

• moving at 10 m/s² acceleration

What is happening during point C to D?

• not moving

• increasing speed at a constant rate

• moving at a constant speed

• moving at 0 m/s² acceleration

Match the graph to the description:

"The car is traveling at a constant speed."

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Match the graph to the description:

"The car is accelerating."

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Match the graph to the description:

"The car is slowing down."

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Match the graph to the description:

"The car is stationary."

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Mark slams on the brakes after traveling 25 m/s. It takes him 3 seconds to come to a complete stop. What is his acceleration?

• 8.33 m/s²

• -8.33 m/s²

• 75 m/s²

• -75 m/s²

What is happening to the car between 3-8 seconds?

• The car is stopped

• The car is traveling at a constant velocity of 0.5 m/s.

• The car has an acceleration of 0.5 m/s².

• The car is going in the other direction.