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WorksheetsFree Fall WJ
Total questions: 18
Worksheet time: 20mins
Name
Class
Date
1.
A pumpkin is dropped from a 35 m building. What is its initial velocity (vi)?
a)
9.8 m/s2
b)
35 m
c)
0 m/s
d)
9.8 m/s
2.
What is the velocity of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? (assume g is rounded to 10 m/s2)?.
a)
10, 20, 30, 40, 50 m/s
b)
5, 10, 15, 20, 25 m/s
c)
5, 20, 45, 80,125 m
d)
10,10,10,10,10 m/s
3.
What is the acceleration of a ball that is dropped off the side of a cliff after 1,2,3,4,5 seconds? (assume g is rounded to 10 m/s2)
a)
5,10,15, 20, 25 m/s2
b)
10, 20, 30, 40, 50 m/s2
c)
5, 20, 45, 80, 125 m/s2
d)
10,10,10,10,10 m/s2
4.
A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reach the top of its path?
a)
~4 seconds
b)
~2 seconds
c)
~6 seconds
d)
~8 seconds
5.
A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 2 seconds?
a)
0 m/s
b)
~20 m/s traveling upward
c)
~20 m/s traveling downward
d)
~40 m/s traveling downward
6.
A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity when you catch it?
a)
0 m/s
b)
~20 m/s traveling upward
c)
~20 m/s traveling downward
d)
~40 m/s traveling downward
7.
A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 6 seconds?
a)
20 m/s traveling upward.
b)
~10 m/s traveling downward.
c)
~20 m/s traveling downward.
d)
~30 m/s traveling downward.
8.
Which would hit the ground first if dropped from the same height in a vacuum (no air)—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
9.
A freely falling object starts from rest. After falling for 6 seconds, it will have a speed of about
a)
6m/s
b)
30m/s
c)
60m/s
d)
300m/s
10.
If you throw a baseball straight up, what is its velocity at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
11.
A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be
a)
less than the speed it had when thrown upwards.
b)
more than the speed it had when thrown upwards.
c)
the same as the speed it had when thrown upwards.
12.
A free falling objects falls under the influence of
a)
force of air
b)
force of gravity
c)
force of resistance
d)
force of friction
13.
Free-falling objects do not encounter
a)
air resistance
b)
force of gravity
c)
downward acceleration
14.
What is terminal velocity?
a)
The speed an object dies at
b)
The highest speed an object reaches because air resistance offsets gravity in the real world
c)
When an object reaches its final velocity of zero
d)
Only happens in physics world
15.
What is acceleration of an object traveling upward during "free fall"?
a)
+9.8m/s2
b)
-9.8m/s2
c)
9.8 m/s
d)
-9.8m/s
16.
how far does an object fall in 3 seconds when dropped (use g=10 m/s2)
a)
45 m
b)
10m
c)
3 m
d)
30 m
17.
how high does a ball travel when thrown upwards at 40 m/s (use g=10 m/s2)
a)
40 m
b)
80 m
c)
10m
d)
1600 m
18.
a pumpkin is dropped from a 30 m tall building. How fast will it smash into the ground (use g=10 m/s2 )
a)
~15 m/s
b)
0 m/s
c)
~30 m/s
d)
~25 m/s
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