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Free Fall Review - select the best answer (g= 9.8 m/s/s) Flashcards | StudBud
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Free Fall Review - select the best answer (g= 9.8 m/s/s)
Free Fall Review - select the best answer (g= 9.8 m/s/s)
30 terms
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A #physics #review game for #freefall
Flashcards
30 cards
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Questions
30
Answers
1
In freefall, objects fall at a constant
distance each successive second
velocity
speed
acceleration
2
For this freefall formula, what is the order of mathematical operations?
multiply 2 and d, square root 2d, then divide by g
square root of 2, multiply that value by d, then divide by g
multiply 2 and d, divide by g, then square root that value
divide 2 by g, square root that value, then multiply by d
3
The MKS unit for DISTANCE is the
inch
meter
centimeter
yard
4
In this freefall formula, under what conditions can it be used to solve a problem?
an object dropped from rest
an object thrown upward
an object launched at an angle
an object thrown downward
5
How far has an object in freefall traveled after 3 seconds?
90 m
30 m
10 m
45 m
6
The MKS unit for SPEED is the
meter per second
mile per hour
mile per hour squared
meter per second squared
7
An object dropped from rest will fall
a larger distance than the second before
a smaller distance than the second before
with the same average speed as the second before
the same distance as the second before
8
Which of the following objects are in freefall?
A GPS satellite orbiting the Earth
A baseball player sliding into home plate.
A skydiver falling with the parachute open.
A hockey puck sliding across the ice.
9
The MKS unit for ACCELERATION is the
meter per second
mile per hour
mile per hour squared
meter per second squared
10
What is meant by the term "freefall?"
only air resistance acts on the object
both gravity and air resistance act on the object
only gravity acts on the object
neither gravity nor air resistance act on the object
11
The acceleration due to gravity on the moon is ______ the acceleration due to gravity on Earth.
nonsense, there is no gravity on the moon!
greater than
equal to
less than
12
An object in freefall
none of the above
must be moving upward
could be moving upward or downward
must be moving downward
13
A baseball player jumps the catch a ball. Once his feet leave the ground, his acceleration
is only 10 m/s/s initially, and changes after that
depends on the initial velocity
varies throughout the jump
is constantly 10 m/s/s
14
A ball is thrown straight upward. At its peak, the ball's acceleration is
0 m/s
10 m/s
0 m/s/s
10 m/s/s
15
An object in free fall has a speed that changes by this amount each second
about 5 m/s
about 10 m/s
a variable amount
about 15 m/s
16
An object is NOT accelerating if it is
at a constant velocity
changing directions
speeding up
slowing down
17
Objects in freefall experience the
force of gravity
none of the above
force of friction
force of air resistance
18
A bullet is fired upward at a speed of 20 m/s. Its total time in the air is
3 seconds
2 seconds
5 seconds
4 seconds
19
The MKS unit for TIME is the
hour
parsec
minute
second
20
A ball in free fall is thrown upward and falls back down. The speed of the ball when caught is
less than the initial speed
equal to the initial speed
cannot be determined because of air resistance
more than the initial speed
21
What is the acceleration of gravity (g) on Earth's surface?
10 m/s/s
0 m/s/s
20 m/s/s
5 m/s/s
22
For an object dropped from rest, how fast will it be going after 3 seconds?
30 m/s
10 m/s
0 m/s
3 m/s
23
In this freefall formula, the "squared" is applied to which numbers or variables?
the g
the t
the one half (1/2)
all three
24
A ball thrown up is in the air for a total time of 12 seconds. The time to reach its peak is
5 seconds
6 seconds
24 seconds
12 seconds
25
How far has an object in freefall traveled after 2 seconds?
10 m
5 m
20 m
1 m
26
A ball is thrown straight upward. At its peak, the ball's speed is
0 m/s
0 m/s/s
10 m/s/s
10 m/s
27
How far has an object in freefall traveled after 1 second?
20 m
10 m
1 m
5 m
28
A ball is thrown upward. at its peak, the acceleration equals
10 m/s/s
0 m/s/s
5 m/s/s
15 m/s/s
29
Acceleration is best defined as the rate at what happens?
velocity changes
speed changes
velocity increases
velocity decreases
30
An object in freefall has a changing
velocity
both velocity and acceleration
acceleration
neither velocity nor acceleration
