PH4020 - Vertical Free Fall
Authored by Mauricio Escobar
Physics
12th Grade
HS-PS2-1 covered
Used 9+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
A juggler throws a rubber ball up at a speed of 9.8 m/s. How long will the ball take to return to his hands?
1 s.
2 s.
0.5 s.
4.9 s.
9.8 s.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An object in free fall always accelerates toward the ground.
Tags
HS-PS2-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ball is tossed upward. At its maximum height...
The ball's acceleration is zero, but not its speed.
The ball's speed is zero, but not its acceleration.
Both the ball's speed and acceleration are zero.
Neither speed nor acceleration are zero.
Velocity and acceleration are opposite.
Tags
HS-PS2-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
John throws a rock up with speed 14 m/s from the top of a 30-m tower. If g = 9.8 m/s2 and air resistance is negligible, what is the rock's speed just as it hits the ground?
14 m/s.
28 m/s.
24 m/s.
392 m/s.
784 m/s.
Tags
HS-PS3-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
A child standing on a bridge throws a rock straight up. The rock leaves the child's hand at time t = 0 s. If we take upward as the positive direction, which of the graphs shown below best represents the acceleration of the stone as a function of time?
Tags
HS-PS2-1
HS-PS2-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ball A is dropped from the top of a very tall building. One second later, ball B is dropped from the same point. Neglect air resistance. As the balls free fall, what should happen with their separation?
Increase.
Remain constant.
Decrease.
Tags
HS-PS2-1
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