Acceleration CBA Review

A car travelling North begins slowing down. In which direction is its acceleration directed?

• North
• South
• East
• West

A dog walking to the East spots a cat and increases its speed to chase it. In which direction is its acceleration directed?

• North
• South
• East
• West

Which is not a method for how a jogger might accelerate?

• run at a constant speed in a straight line

• increase velocity and speed up

• decrease velocity and slow down

• turn around a corner while moving at a constant speed

A train approaches a crossing and goes from 25m/s to 10m/s in 240 seconds, how can the train's acceleration be described over this time period?

• positive
• negative
• zero
• constant

Which scenario describes an object with an acceleration of zero?

• a car runs out of gas and slowly rolls to a stop
• a car decreases speed at a constant rate until it comes to rest
• car has constant speed and is traveling on a straight path
• the car travels round trip and is back at the starting point

Which is an example of a car NOT accelerating?

• moving at 80km/h on a flat, straight highway
• slowing down to round a corner
• speeding up to win the race
• crossing the finish line and pulling into the pit

-

• The Black trajectory again this time.
• The Blue trajectory this time.
• The Orange trajectory this time.
• None of them, it would fall straight down.

-

• The Black trajectory again this time.
• The Blue trajectory this time.
• The Orange trajectory this time.
• None of them, it would fall straight down.

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• 0 m/s
• 9.8 m/s²

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• 0 m/s
• 9.8 m/s²