Download force problem set 1: 2/17/12

FORCE PROBLEMS
1.
Joe travels 60km South from his home in Myrtle Beach to his sister’s home in Altoona. After a short visit, he
drives North 30km from his sister’s house to his brother’s home in Baileyville. What is Joe’s displacement?
2. It takes Lynn 2.3 hours to drive a distance of 130km. What is his average velocity for the trip?
3. As shown in this diagram, the cart travels .9m down the ramp in a time of 1.50s. What is the acceleration of the
cart?
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Show how to rearrange the equation, F-ma to solve for acceleration.
Show how to rearrange the equation, F-ma to solve for mass.
Calculate the force required to accelerate a 30kg go cart at 4.0m/s2.
Determine the force necessary to accelerate a 300kg rocket at 315.00m/s2.
What force is required to accelerate a 2000kg truck at 2.0m/s2?
What is the forward acceleration of a 2000kg truck when the tires apply an accelerating force of 434N to the
road?
10. In the last question, in which direction must the tires apply the accelerating force, forward or backwards?
11. In question 6, which of Newton’s three laws helps you answer the question?
12. What is the net force acting on the box in the free body diagram shown below?
13. What is the acceleration of the box shown in the diagram above?
14. How much net force would be required to accelerate the box in question 12 at 2.33m/s/s?
15. What is the net force acting on the box shown in the free body diagram below?
16. Refer back to the box in question 15. What is the mass of the box?
17. Refer back to the box in question 15. What is the acceleration of the box?
18. Refer back to the box in question 15. Which of the following could possibly be the velocity of the box? A. 8.5m/s
B. 2.2m/s C. 16m/s D. 0m/s
19. What is the mass of a cannon projectile that is accelerated at 120m/s/s by a 12000N force?
20. What is the mass of a cart that is accelerated at 3.0m/s/s by an applied force of 430N?
21. During an accident, a 75kg body slows from 15m/s to 2m/s in 6.0s.What is the acceleration of the body?
22. What is the force experienced by the body in question 21?
23. Two forces, + 20N Right and -30N left, act on an object. What is the net force acting on the object?
24. Convert 400kgm/s2 to Newtons.
25. The rocket engine of a 40kg rocket apply a thrust force of 8000N to the rocket. What is the weight of the
rocket?
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