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- 1. Multiple Choice
At what point is vy= 0 m/s?
A
B
C
D
None of these points
- 2. Multiple Choice
At what point is vx= 0 m/s?
A
B
C
D
None of these points
- 3. Multiple Choice
Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?
- 4. Multiple Choice
Who do you agree with?
Anita: “A projectile’s vx changes because of gravity, and its vy remains constant.”
Barry: “Both vx and vy are constant.”
Chris: “A projectile has no acceleration in the vertical dimension but it does accelerate horizontally.”
Dave: “A projectile has vertical acceleration and a constant horizontal velocity”
- 5. Multiple Choice
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. If they leave the the same instant, which will hit the ground first?
A
B
Both at the same time
- 6. Multiple Choice
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground farther from the base of the cliff?
A
B
Both at the same distance
- 7. Multiple Choice
A ball is thrown into the air at some angle, with initial velocities vx (horizontal) and vy (vertical). At the very top of the ball’s path:
What is its velocity in the horizontal direction?
vx
Greater than vx
Zero
- 8. Multiple Choice
A ball is thrown into the air at some angle, with initial velocities vx (horizontal) and vy (vertical). At the very top of the ball’s path:
What is its velocity in the vertical direction?
vy
Greater than vy
Zero
- 9. Multiple Choice
In the absence of air resistance, the angle at which a thrown ball will go the farthest is?
90°
30°
60°
45°
- 10. Multiple Choice
A package is dropped from an airplane flying horizontally, where will the package hit the ground? (ignore air resistance)
A
B
C
- 11. Multiple ChoiceThe more mass an object has, the faster it will fall.TrueFalse
- 12. Multiple ChoiceIf you throw a baseball straight up, what is its velocity at the highest point?9.8 m/s29.8 m/s0 m/s20 m/s
- 13. Multiple Choice
What is the horizontal acceleration of a projectile?
0 m/s2
-9.8 m/s2
- 14. Multiple Choice
What is the vertical acceleration of a projectile?
0 m/s2
-9.8 m/s2
- 15. Multiple ChoiceIf I throw a crayon straight up at 12m/s, how fast is its speed when i catch it at the same height?6 m/s12 m/s18 m/s24 m/s
- 16. Multiple ChoiceIf you drop a banana, how fast is it going after 2 seconds?4.9m/s9.8m/s19.6m/s29.4m/s
- 17. Multiple Choice
In the diagram, which letter represents the vertical displacement ?
A
B
C
D
- 18. Multiple Choice
In the diagram, which letter represents the horizontal displacement ?
A
B
C
D
- 19. Multiple Choice
A ball rolls off a table and strikes the floor, as shown. If the time the ball spent in the air was 0.58 s, how fast did the ball leave the table?
3.6 m/s
1.2 m/s
2.9 m/s
0.99 m/s
- 20. Multiple Choice
A skateboarder rolls off a bridge into the river as shown. If the skateboarder was originally moving at 7.0 m/s, how much time did the skateboarder spend in the air?
1.3 s
0.79 s
38.5 s
0.70 s
Not enough information given.
- 21. Multiple Choice
A skateboarder rolls off a bridge into the river as shown. If the skateboarder spent 0.79 s in the air, how far above the river is the edge of the bridge?
5.5 m
0.70 m
1.3 m
3.1 m
Not enough information given.
- 22. Multiple Choice
In the picture, cannonball A was launched at 10 m/s at 60°, and B was launched at 18 m/s at 25°. The cannonball that hit the ground first was
A, because it had less total velocity.
B, because it had more total velocity.
A, because it had less initial vertical velocity.
B, because it had less initial vertical velocity.
- Answer choicesTagsAnswer choicesTags