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- Multiple ChoicePlease save your changes before editing any questions.
At what point is vy= 0 m/s?
A
B
C
D
None of these points
- Multiple ChoicePlease save your changes before editing any questions.
At what point is vx= 0 m/s?
A
B
C
D
None of these points
- Multiple ChoicePlease save your changes before editing any questions.
Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?
- Multiple ChoicePlease save your changes before editing any questions.
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”
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
In the absence of air resistance, the angle at which a thrown ball will go the farthest is?
90°
30°
60°
45°
- Multiple ChoicePlease save your changes before editing any questions.
A package is dropped from an airplane, where will the package hit the ground?
A
B
C