18 Questions

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Questions and Answers

- 1.Occurs when an object speeds up, slows down, or turns.
- A.
Inertia

- B.
Acceleration

- 2.Total distance traveled divided by the total time it took to travel that distance.
- A.
Average speed

- B.
Velocity

- 3.The speed of an object at one instant of time.
- A.
Average speed

- B.
Momentum

- 4.The measure of how difficult it is to stop a moving object.
- A.
Average speed

- B.
Momentum

- 5.The speed and direction of a moving object
- A.
Velocity

- B.
Inertia

- 6.The distance and direction from a starting point to a stopping point
- A.
Acceleration

- B.
Displacement

- 7.Calculate the speed of a swimmer who swam 150m in 88s. Round to the nearest 10th. ________ m/s. (Put the numeric value only, not the m/s). You may use your calculator.
- 8.A girl walked 200 meters north, 100 meters east,and 200 meters south. What is the total distance she traveled in meters? Put the numeric value only.
- 9.A girl walked 200 meters north, 100 meters east,and 200 meters south. What was her displacement? _____m East.
- 10.An object has a speed of 2.00 m/s. Three seconds later it is going 8.00 m/s. What average acceleration did it experience? ______ m/s 2. You may use your calculator.
- 11.What is the SI unit used for distance?
- A.
Kg

- B.
M

- 12.What is the SI unit for mass?
- A.
Kg

- B.
M

- 13.How is acceleration expressed?
- A.
M/s

- B.
M/s2

- 14.What does a horizontal line on a distance/time graph represent?
- A.
0 speed (stopped)

- B.
No change in accleration

- 15.What does a line sloping upward mean in a Velocity/time graph mean?
- A.
Positive acceleration

- B.
Negative acceleration

- 16.The momentum of a falling leaf is ___ than the momentum of a falling pinecone.
- A.
Less than

- B.
Greater than

- 17.A 50 kg object moves with a velocity of 10 m/s. What is its momentum? _______ kg x m/s. (Write the numeric value only). You may use your calculator.
- 18.Choose one of the following to write an essay on. -Why do we say that a merry-go-round is accelerating if it is going a constant speed? -If you hear that a tornado in a town near you is traveling 25 km/h, can you determine if you should seek shelter? -Why would an airplane's displacement be nearly the same as the distance it traveled?