Practice Rate Of Change Of Velocity (7.3) - Motion

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define velocity.
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Think about how speed alone differs from describing direction.
Question 2.
What does uniform motion mean?
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Consider examples when speed doesn’t change.
3Question 3.
What is the formula for calculating acceleration?
- a = v - u / t
- a = (v - u) / t
- a = u + v
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Recall the specific terms involved in the equation.
4Question 4.
True or False: In uniform motion, acceleration is zero.
- True
- False
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Think about how speed remains constant.
Question 5.
A runner accelerates from 8 m/s to 20 m/s in 4 seconds. What is the runner's acceleration and how far do they travel in this time?
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Break it into two parts: first calculate acceleration, then use it to find distance.
Question 6.
A jet fighter reduces its speed from 300 m/s to 100 m/s in 5 seconds. Calculate the acceleration and the distance covered during this time.
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Remember to consider the negative sign in acceleration when calculating distance.

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