15. A boy pulls a 150 kg sled across the ice using a force of 20...

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15. A boy pulls a 150 kg sled across the ice using a force of 20 N northward. What is the acceleration of the sled? 16. A 1500 kg truck traveling 20 m/s hits a 700 kg car that is at rest (no external forces are present). If the two vehicles stick together, what is the final velocity of the wreckage? 17. A 0.012 kg ping-pong ball is placed 1.8 m away from 0.3 kg billiard ball. Calculate the gravitational force between the two objects. 18. A 0.001 kg nail is placed 0.2m away from 0.1 kg hammer. Calculate the gravitational force on the nail from the hammer. 19. A 0.15kg baseball is pushed with a 100N force. What will its acceleration be? 20. A 200g ball is accelerated from 5m/s to 25m/s in 0.3sec. What force was applied? 21. A 300g hockey puck slows from 10m/s to 7m/s in 3s. What was the force of friction? 22. Use the diagram below to answer the following questions: a. What part of the force is actually causing this box to accelerate? b. What is the value of that force? c. What acceleration will the box experience? 20 kg 150 N 60 15. A boy pulls a 150 kg sled across the ice using a force of 20 N northward. What is the acceleration of the sled? 16. A 1500 kg truck traveling 20 m/s hits a 700 kg car that is at rest (no external forces are present). If the two vehicles stick together, what is the final velocity of the wreckage? 17. A 0.012 kg ping-pong ball is placed 1.8 m away from 0.3 kg billiard ball. Calculate the gravitational force between the two objects. 18. A 0.001 kg nail is placed 0.2m away from 0.1 kg hammer. Calculate the gravitational force on the nail from the hammer. 19. A 0.15kg baseball is pushed with a 100N force. What will its acceleration be? 20. A 200g ball is accelerated from 5m/s to 25m/s in 0.3sec. What force was applied? 21. A 300g hockey puck slows from 10m/s to 7m/s in 3s. What was the force of friction? 22. Use the diagram below to answer the following questions: a. What part of the force is actually causing this box to accelerate? b. What is the value of that force? c. What acceleration will the box experience? 20 kg 150 N 60