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- 1. Multiple ChoiceA place or object used for comparison to determine if another object is in motion is called acomparison pointreference pointpoint of viewmotion detector
- 2. Multiple Choice
Relative motion
the motion of an object in comparison to other objects in a specific frame of reference
the point of view used to measure the position and movement of objects
how fast something moves
the distance
- 3. Multiple Choice
The president’s airplane, Air Force One, flies at 250 m/s to the east (compared to the ground). The president visits the pilots in the cockpit. Then he walks to the back of the plane at 1 m/s. What is his speed relative to the ground?
249 m/s
251 m/s
253 m/s
248 m/s
- 4. Multiple Choice
If a car passes you going 90 km/hr north while you are driving 80 km/hr north, how far is the car moving relative to your car
170 km/hr N
170 km/hr S
10 km/hr S
10 km/hr N
- 5. Multiple Choice
A passenger at the rear of a train traveling at 15 m/s relative to Earth throws a baseball with a speed of 15 m/s in the direction opposite the motion of the train.
What is the velocity of the baseball relative to Earth as it leaves the thrower’s hand?
30 m/s
15 m/s
0 m/s
20 m/s
- 6. Multiple Choice
A spy runs from the front to the back of a ship at a speed of 3.0 m/s. If the ship is moving forward at 18.0 m/s, how fast does the spy appear to
be running when viewed by someone watching from the shore?
14.5 km/hr
15.0 m/s
21.0 m/s
63 m/s
- 7. Multiple Choice
The best reference points are stationary (not moving).
true
false
- 8. Multiple Choice
A baseball pitcher is warming up as he travels to a game by plane. The plane is flying at 250 m/s North relative to the ground. The pitcher throws the ball at 50 m/s South relative to the airplane. What is the ball’s velocity relative to the ground?
200 m/s South
200 m/s North
250 m/s South
250 m/s North
- 9. Multiple Choice
A boat is travelling upstream at 5 km/h [N] relative to the shore. If there is a current of 7 km/h [S], what is the boat’s velocity relative to the water?
2 km/h N
2 km/h S
12 km/h N
12 km/h S
- 10. Multiple ChoiceHow fast does the plane appear to be moving to a person riding in the car?520 m/s460 m/s30 m/s490 m/s
- 11. Multiple ChoiceHow fast does the hot air balloon appear to be moving to the person in the canoe?1 m/s to the left1 m/s to the right5 m/s to the left5 m/s to the right
- 12. Multiple ChoiceWhat has both size and direction?VictorHectorVectorOrigin
- 13. Multiple Choicean object's distance and direction from a reference pointpositionmotiondisplacementreference point
- 14. Multiple Choicethe process of changing positionmotionreference pointaccelerationspeed
- 15. Multiple ChoiceWhat is velocity?the quickness of an objectthe location of an objectaccelerationspeed in a specific direction
- Answer choicesTagsAnswer choicesTags