Practice Introduction To Velocity And Acceleration (1.1)

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9 questions

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6 sample questions

Question 1.
Define velocity.
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Remember it includes direction.
Question 2.
What is the SI unit of acceleration?
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Think about how velocity changes over time.
3Question 3.
What is velocity?
- A scalar quantity
- A vector quantity
- A fixed quantity
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Think about what vector quantities include.
4Question 4.
True or false: Acceleration is a scalar quantity.
- True
- False
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Recall what vector quantities are.
Question 5.
A skateboarder starts from rest and accelerates uniformly at 2 m/s². How far does the skateboarder travel in 6 seconds?
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Consider starting from rest (u = 0) and use the acceleration in the formula.
Question 6.
A car moving at 25 m/s applies brakes to decelerate at -5 m/s². How long will it take to stop?
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Be careful with the signs for acceleration when the car is slowing down.

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