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- 1. Multiple Choice
Approximately how far can an object fall in 5 seconds?
5 m
25 m
50 m
125 m
- 2. Multiple Choice
A free falling objects falls under the influence of the
force of air
force of gravity
force of resistance
net force
- 3. Multiple Choice
If you throw a baseball straight up, what is its vertical (y-direction) velocity at the highest point?
9.8 m/s2
9.8 m/s
0 m/s2
0 m/s
- 4. Multiple Choice
A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reach its highest point in the air?
2 seconds
1 seconds
3 seconds
4 seconds
- 5. Multiple Choice
A freely falling object starts from rest. After falling for 6 seconds, it will have a speed of about:
6 m/s
30 m/s
60 m/s
300 m/s
- 6. Multiple Choice
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal ball?
the feather
the metal ball
They would hit the ground at the same time.
They would not fall at all in a vacuum.
- 7. Multiple Choice
What is acceleration of an object flying upward during free fall?
+ 9.8 m/s2
- 9.8 m/s2
+ 9.8 m/s
-9.8 m/s
- 8. Multiple Choice
In a normal environment, like the classroom, why does a bowling ball and feather hit the ground at different times when dropped from the same height?
They don't; they hit the ground at the same time.
One is more dense than the other.
One is heavier than the other.
Air resistance
- 9. Multiple Choice
Heavier objects free fall faster than lighter objects.
True
False
- 10. Multiple ChoiceWhat values are always known for a free falling object?vi = 0 m/s
a = -9.8 m/s2vi = -9.8 m/s
a = -9.8 m/s2vi = -9.8 m/s
a = 0 m/s2d = -9.8 m
vi = 0 m/s - Answer choicesTagsAnswer choicesTags