21. FINAL LETS PLAY PHYSICS JEOPARDY! Return to Main Menu 500 500 500 500 400 400 400 400 300 300 300 300 200 200 200 200 100 100 100 100 Newton’s Laws Force Acceleration & Momentum Speed & Velocity
22. Why is motion relative? Category1: 100 Question d) It depends on your point of reference a) It depends on the speed b) It depends on your relatives c) None of the above
26. What is the difference between velocity and speed? b) Velocity has direction a) Speed is faster than velocity Category1: 300 Question d) Speed has direction c) There is no difference
30. At what velocity did an airplane fly if it traveled westward 1760 meters in 8 seconds? b) 220 m/s a) 160 m/s Category1: 500 Question d) None of the above c) 260 m/s
32. A car is traveling at 30 km/hr. It speeds up to 85 km/hr in 5 seconds. What is the acceleration of the car? b) 11 km/hr/hr a) 55 km/hr/hr Category2: 100 Question d) 85 km/hr c) 10 km/hr/hr
34. A roller coaster’s velocity at the top of the hill is 10 m/s. Two seconds later it reaches the bottom of the hill with a velocity of 26 m/s. What is the acceleration of the roller coaster? b) 8 m/s/s a) 16 m/s/s Category2: 200 Question d) None of the above c) 13 m/s/s
36. Despite his mother’s warnings, Tim was playing ball in the house when his ball bounced out the window. A free falling body accelerates at about 10 m/s/s. What is the velocity of Tim’s ball after 2 seconds? (Hint: The original downward velocity of the ball is zero m/s) c) 20 m/s a) 30 m/s Category2: 300 Question d) None of the above b) 10 m/s
38. What is the momentum of an 0.30 kg bluejay flying at 17 m/s? b) 5.1 kg-m / s a) 56.7 kg-m /s Category2: 400 Question d) None of the above c) 51 kg-m / s
40. Which object most likely has more momentum: a car traveling at 10 km/hr or a baseball pitched at 150 km/hr? b) car a) baseball Category2: 500 Question c) Their momentums would be the same d) None of the above
48. True or False: A force can set an object in motion, stop its motion, or change the speed and direction of its motion? b) True a) False Category3: 400 Question
52. Suppose a 15-N force is required to push a crate across a floor. If you exert a force of 7-N, what force must your friend exert so that you can move the crate together? c) 8 N b) 22 N Category3: 500 Question d) None of the above a) 10 N
54. How does inertia affect riding a bicycle? b) You can stop peddling and you will continue to roll a) You need to peddle harder when going uphill Category4: 100 Question d) Bicycles don’t use inertia c) You need to peddle harder when going downhill
56. What happens when you double the force of an object (with no friction) ? d) You double its acceleration a) Nothing happens Category4: 200 Question c) You double its mass b) You cut the acceleration in half
58. If you are standing on a scale and jump off, what happens to its reading? c) It goes up accordingly to the force of the jump a) Nothing Category4: 300 Question d) None of the above b) It immediately goes down when you jump off
60. How much force is needed to accelerate a 1400 kg car at 2/m/s/s ? b) 2800 kg-m/s/s or 2800 N a) 500 kg-m/s/s or 500 N Category4: 400 Question d) None of the above c) 700 kg-m/s/s or 700 N
66. Final Jeopardy! Return to Main Menu It is 1:00 pm. The local weather channel is tracking a thunder storm that is traveling at 25 km/hr. The storm is 75 km west of Ann Arbor. If school gets out at 3:00 pm, will Forsythe students be able to get home before the storm? Yes - The storm will hit at 4:00 pm.
67. If the forces exerted on an object are 50 N in one direction and 30 N in the opposite direction, what is the net force exerted on the object? 20 N Final Jeopardy! Return to Main Menu
