THIS IS With Your Host... Section 1 Section 2 Section 3 Vocabulary Problems This N That 100 100 100 100 100 100 200 200 200 200 200 200 300 300 300 300 300 300 400 400 400 400 400 400 500 500 500 500 500 500 The formula for speed A 100 D/T A 100 The SI unit for speed A 200 M/S A 200 Total Distance divided by total time A 300 Average Speed A 300 Speed and Direction A 400 Velocity A 400 An objects speed at a particular moment A 500 Instantaneous Speed A 500 Change of velocity / time B 100 Acceleration B 100 Unit for acceleration B 200 m/s squared B 200 What three things cause acceleration B 300 Speed up Slowing down Changing direction B 300 On a graph, how is negative acceleration shown B 400 Sloped downward B 400 On a graph, a horizontal line would indicate B 500 Zero, or Constant Speed B 500 Amount of matter in an object C 100 mass C 100 How is momentum calculated C 200 Mass x velocity C 200 The total momentum of objects that collide with each other does not change C 300 Law of conservation of momentum C 300 DAILY Place A Wager DOUBLE C 400 The tendency of an object to resist a change in motion C 400 Inertia C 400 Give an example of how momentum should be labeled C 500 (example) Kg/m/s north P=mv C 500 A measure of how difficult it is to stop an object D 100 Momentum D 100 The speed of an object at one instant of time D 200 Instantaneous Speed D 200 Tendency of an object to resist change D 300 Inertia D 300 States that the total momentum of objects that collide do not change D 400 Law of conservation of momentum D 400 Total Distance / Total Time D 500 AVERAGE Speed (you must have said average to get the points!) D 500 You travel 190 km in 2 h. What is your speed? E 100 95 km/h E 100 A car with a mass of 725 kg is moving at 30 m/s. What is the momentum? E 200 21,750 kg/m/s E 200 A 50 kg object has a momentum of 600 kg/m/s. What is the velocity E 300 12 m/s E 300 A car travels for 5.5 hours at an average speed of 75 km/h How far did it travel? E 400 412 km E 400 A 50 kg object moving at 12 m/s has a momentum of 600kg /m/s. What is the mass of an object moving at 4m/s that has the same momentum? E 500 150 kg E 500 Change in an objects motion F 100 Acceleration F 100 What type of acceleration does an object have when it slows down? F 200 Negative F 200 When two billiard balls collide, they eventually stop. What causes them to stop? F 300 Friction F 300 A 50 kg object moves with a velocity of 10m/s. What is its momentum F 400 500 kg m/s F 400 A girl walks 2 km north, then 2 km east, then 2 km south, then 2 km west. What is her displacement? F 500 Her displacement is zero. She finished where she started F 500 The Final Jeopardy Category is: Speed Please record your wager. Click on screen to begin A girl leaves school at 3:00 and starts walking home. Her house is 2 km away. She gets home at 3:30. What was her average speed? Do you know her instantaneous speed at 3:15? Why or why not? Click on screen to continue Her average speed is 2 km/.5h = 4km/h. It is impossible to know her instantaneous speed at 3:15 because she may not have been walking at a constant speed. Only her average speed can be found Click on screen to continue Study For your test! Game Designed By C. Harr-MAIT