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WorksheetsFree Fall
Total questions: 30
Worksheet time: 25mins
Name
Class
Date
1.
What is the distance a ball falls after 1,2,3,4,5 seconds (assume g is rounded to 10 m/s2)?
a)
10, 20, 30, 40, 50 m (meters)
b)
5, 20, 45, 80,125 m (meters)
c)
5, 10,15, 20, 25 m (meters)
d)
10, 25, 60, 90,120 m (meters)
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 back to the point it was thrown from?
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 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.
7.
In free fall, where does an object have the slowest speed?
a)
Vi
b)
Vf
c)
Vtop
d)
More than one is correct
8.
What is terminal velocity?
a)
The highest speed an object reaches because of unbalanced forces
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
9.
If a free falling object takes 10s to travel upward, what is the total time the object is in the air?
a)
0s because of symmetry and Tup = +10s, so Tdown = -10s. Which means that Ttotal = 0s.
b)
20s because of symmetry and Tup = 10s, so Tdown = 10s. Which means that Ttotal = 20s.
c)
Greater than 10s, but less than 20s because the object would fall faster than it rose because of gravity. Without more information, you cannot calculate this number.
d)
Less than 10s because the object begins falling back before the 10s and it falls faster than it rises.
10.
If you know the time an object is in the air, can you find the Vf of the object?
a)
Yes, you would have to halve the time since the Ttotal is for both rise and fall and you would have to calculate the height the object rose before finding the Vf
b)
Yes, you would use the time the object was in the air to find the distance the object travels upward before
c)
No, you are not given enough information
d)
No, it depends on the acceleration, which is different on the way up and on the way down.
11.
How does the Vi compare to the Vf in a free fall problem?
a)
Vi and Vf are exactly the same, this is because of symmetry
b)
Vi and Vf are close but Vf is larger because you would fall faster than you would rise, since you are slowing down
c)
Vi and Vf are the same in magnitude, but different in vector
d)
Since the object must start at 0m/s and end at 0m/s, Vi and Vf are the same
12.
The change in velocity in a given time period is?
a)
Vi
b)
Vf
c)
a
d)
d
13.
When speed and direction remain the same throughout a motion, this is called?
a)
Accelerated motion
b)
Constant motion
c)
Changing motion
d)
Changing velocity
14.
When the velocity of an object does not change, what happens to its acceleration?
a)
Nothing, it does accelerate
b)
It is a constant acceleration
c)
It is a changing acceleration
15.
When an object falls in physics world, what happens?
a)
It accelerates at a constant rate until it hits the ground
b)
It accelerates at a non-constant rate until it hits the ground
c)
It accelerates at a constant rate until it reaches terminal velocity
d)
It accelerates at a non-constant rate until it reaches terminal velocity
16.
Which of the following statements applies to the motion of a ball rising and then falling in free fall?
I. The ball has constant acceleration as it moves upward.
II. The ball has constant acceleration at the top of its path.
III. The ball has constant acceleration as it moves downward.
I. The ball has constant acceleration as it moves upward.
II. The ball has constant acceleration at the top of its path.
III. The ball has constant acceleration as it moves downward.
a)
I only
b)
III only
c)
I and III
d)
I, II, and III
17.
A baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball’s path does it experience zero velocity and nonzero acceleration at the same time?
a)
midway on the way up
b)
at the top of its path
c)
the instant it leaves the catcher’s hand
d)
the instant before it arrives in the catcher’s mitt
18.
Which would hit the ground first if dropped from the same height in a vacuum—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.
19.
Which would fall with greater acceleration in a vacuum—a leaf or a stone?
a)
the leaf
b)
the stone
c)
They would accelerate at the same rate.
d)
It is difficult to determine without more information.
20.
Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is NOT true?
a)
You and the car are accelerating.
b)
Your acceleration is constantly changing.
c)
Your velocity is constant.
d)
Your direction is constantly changing.
21.
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.
22.
If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by
a)
about 5 m/s.
b)
about 10 m/s.
c)
about 15 m/s.
d)
a rate that depends on its initial speed.
23.
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
24.
1. An object free falls for 3.5 seconds. How far does it fall?
a)
120.05 m
b)
17.15 m
c)
60.03 m
d)
34.3 m
25.
1. An object free falls for 3.5 seconds. Given only this information, what equation is used to find the speed?
a)
v=gt
b)
v=d/t
26.
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
27.
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.
28.
An object accelerates at 2 m/s2. Assuming the object starts from rest, how much time does it need to accelerate to a speed of 16 m/s?
a)
4 s
b)
8 s
c)
16 s
d)
1/16 s
29.
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
30.
A ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be (down is considered a negative direction):
a)
19.6 m/s
b)
-5.4 m/s
c)
-44.6 m/s
d)
44.6 m/s
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