1. Kahoot

2. Question 1 A packing crate slides down an inclined ramp at constant velocity. Thus we can deduce that

3. Question 1 Answer A packing crate slides down an inclined ramp at constant velocity. Thus we can deduce that a frictional force is acting on it.

4. Question 2 A toolbox, of mass M, is resting on a flat board. One end of the board is lifted up until the toolbox just starts to slide. The angle θ that the board makes with the horizontal for this to occur depends on the

5. Question 2 Answer A toolbox, of mass M, is resting on a flat board. One end of the board is lifted up until the toolbox just starts to slide. The angle θ that the board makes with the horizontal for this to occur depends on the coefficient of static friction, μ. Hint: The acceleration of gravity, g, cancels out.

6. Question 3 To avoid slipping while walking on ice, one should take smaller steps because of the

7. Question 3 Answer To avoid slipping while walking on ice, one should take smaller steps because of the Friction of ice is small

8. Question 4 A force of 98 N is required to just start moving a body of mass 100 kg over ice. Calculate the coefficient of static friction.

9. Question 4 Answer A force of 98 N is required to just start moving a body of mass 100 kg over ice. The coefficient of static friction is 0.1 Use the equation for friction and make sure the mass is converted to a force.

10. Question 5 Which of the following statements is not true? 1.The force of friction acts opposite to the applied force 2.Rolling friction is greater than sliding friction 3.The coefficient of friction between wood&wood is less than 1

11. Question 5 Answer Which of the following statements is not true? Rolling friction is greater than sliding friction

12. Question 6 When there is no relative motion between two surfaces, the force

13. Question 6 Answer When there is no relative motion between two surfaces, the force exerted by one surface on the other is static friction force

14. Question 7

15. Question 7 Answer 31 N Force of Friction = 40 kg x 9.8 m/s/s x 0.08 N

16. Question 8

17. Question 8 answer Kinetic friction force

18. Question 9

19. Question 9 Answer 110 N - take coefficient times the normal force

20. Question 10

21. Question 10 Answer

22. Question 11

23. Question 11 answer

24. Question 12

25. Question 12 answer equilibrant

26. Question 13

27. Question 13 answer

28. Question 14

29. Question 14 answer

30. Question 15

32. Question 16

33. Question 16 answer

34. Question 17 The resultant between 2 vectors can be found by placing the vectors

35. Question 17 answer The resultant between 2 vectors can be found by placing the vectors Tip to tail

36. Question 18 Equilibrium can occur

37. Question 18 answer Equilibrium can occur only if the sum of the forces is zero.

38. Question 19 The normal force on an object always act

39. Question 19 answer The normal force on an object always act perpendicular to the surface upon which object is resting.