Question
1. A train accelerates from rest with an acceleration of 4 m/s 2 for a time of 20 s. What is the train's speed at
1. A train accelerates from rest with an acceleration of 4 m/s2 for a time of 20 s. What is the train's speed at the end of 20 s?
2. A ball is thrown straight upward with a speed of +12 m/s. What is the ball's acceleration just after it is thrown?
3. A bus starting from a speed of +24 m/s slows to 6 m/s in a time of 3 s. What is the average acceleration of the bus?
4. What property does this describe? The length of movement from beginning to end, a vector quantity.
5. What is a scalar quantity?
6. How long will it take for a car to slow down from 22 m/s to 3 m/s if it decelerates at 2.4 m/s/s?
7. Acceleration describes a change in _____.
8. A ball is thrown straight upward with a speed of +12 m/s. How much time does it take for the ball to rise to its maximum height?
9. What kind of quantity is the distance?
10. What is a good statement for velocity?
11. A football player starts from rest 10 meters from the goal line and accelerates away from the goal line at 5 m/s2. How far from the goal line is the player after 4 s?
12. Describe acceleration.
13. What is a scalar measurement?
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