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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. 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, where will the package hit the ground?
A
B
C
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