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Acceleration Problems

1. Write the equations for velocity, speed, and acceleration.

2. Suppose that a jet airliner starts at rest at the end of a runway and reaches a speed of 80m/s in 20 s. The airliner is traveling in a straight line down the runway. Calculate its acceleration.

3. Imagine that a skateboarder is moving in a straight line at a speed of 3m/s and comes to a stop in 2s. Calculate its acceleration.

4. A swimmer speeds up from 1.1m/s to 1.3m/s during the last 20s of a workout. What is the swimmer's acceleration during this time interval?

5. While walking to school, you approach an intersection and slow down from 2m/s to a stop in 3s. What was your acceleration?

6. True or False? If two cars are driving at a speed of 60 mph and one turns east while the other continues straight, they are travelling at the same velocity. Why or Why not?

7. True or False? If an object is slowing down, does this mean it is accelerating. Why or why not?

8. What is negative acceleration?

9. List three ways to change your velocity while riding a bicycle.

10. An ice cream truck is moving along at 20 m/s. It then speeds up for 5 seconds to 25 m/s. What is the truck’s acceleration?

11.What would a ball’s final velocity be if it accelerated at a rate of 0.30 m/s2 over a distance of 50 meters for 5 seconds. The starting velocity was 0.50 m/s.

12. If a rocket in space is moving at a speed of 9.8 m/s and then uses its propulsion system to accelerate to 10 m/s during a 30 second burn, what would be the acceleration of the rocket?

13. A car is travelling at a speed of 10 m/s, then accelerates over a period of 12 seconds to 14 m/s. What is its acceleration?

14. A ball rolls down a hill. Initially, it is travelling at a speed of 2.5 m/s. It accelerates to a speed of 4 m/s.

a) What is the ball’s acceleration if it accelerates for 3 seconds?

b) What is the ball’s acceleration if it accelerates for 7 seconds?

c) What is the ball’s acceleration if it accelerates for 10 seconds?

15. If you travel 1,000 meters at a speed of 100 m/s and another thousand meters at a speed of 10 m/s, what is your average speed?

16. A pedestrian is running at a speed of 6.0 m/s to catch a bus that is stopped by a traffic light. He accelerates to 8.0 m/s over a period of 5 seconds. What is his acceleration?

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