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WorksheetsProjectile Motion
Total questions: 38
Worksheet time: 38mins
The horizontal component of velocity of a projectile
continually changes
stays constant
The vertical component of velocity of a projectile
continually changes
stays constant
When velocity is represented as a vector
the length of the arrow represents the speed.
the length of the arrow is drawn to a suitable scale.
the direction of the arrow shows the direction of motion.
all are correct
A ball is thrown into the air at some angle between 10 degrees and 90 degrees. At the very top of the ball’s path, its velocity is
entirely vertical.
entirely horizontal.
some vertical and some horizontal.
zero.
Which of the following would NOT be considered a projectile?
A cannonball thrown through the air
A cannonball rolling down a slope
A cannonball rolling off the edge of a table
A cannonball thrown straight up
A boat is rowed at 6m/s directly North across a river which is flowing East at 8m/s. What is the resulting speed of the boat?
2 m/s
14 m/s
10 m/s
5.3 m/s
If a velocity vector has a magnitude of 5 m/s and the horizontal component has a value of 3 m/s, what is the vertical component?
8 m/s
2 m/s
4 m/s
5.8 m/s
An object is dropped and falls freely to the ground with an acceleration of g. If it is thrown upward at an angle instead, its acceleration would be
0
larger than g
g upward
g downward
none of these are correct
A cannonball is launched horizontally from a tower. If the cannon has a barrel velocity of 60m/s, how far away horizontally is the ball 1 second later?
6 m downrange
30 m downrange
60 m downrange
300 m downrange
none of these are correct
A cannon with a barrel velocity of 140m/s launches a cannonball horizontally from a tower.
How far vertically will the cannonball have fallen after 4 seconds?
80 m
140 m
560 m
2240 m
none of these are correct
Two projectiles, A and B, are shown, both launched with the same speed. They travel the same horizontal distance.
Which one has a bigger y-component of initial velocity?
A
B
same
not enough information
Two projectiles, A and B, are shown, both launched with the same speed. They travel the same horizontal distance.
Which one has a bigger x-component of initial velocity?
A
B
same
not enough information
Two projectiles, A and B, are shown, both launched with the same speed. They travel the same horizontal distance.
Which one spends more time in the aire?
A
B
same
not enough information
A diagram includes a 3-cm long arrow pointing to the right. The arrow is a vector scaled so that 1 cm = 10 m/s. Which statement best describes the vector.
3 cm to the right
30 m/s to the right
to the right
60 km/h to the right
A ball is dropped off the edge of a desk. Another ball rolls off the desk at exactly the same time. Mark the word that best describes the vertical component of velocity of the balls.
equal
opposite
independent
constant
A projectile moving through the air with no air resistance experiences no force in the horizontal direction.
True
False
What is the SI unit of speed?
m
m/s
m/s2
s
What is the SI unit of velocity?
m
m/s
m/s2
s
What is the SI unit of acceleration?
m
m/s
m/s2
s
What is the SI unit of time?
m
m/s
m/s2
s
A football is punted down the field. At the top point of its trajectory,
vx=0 and v=vy
vy=0 and v=vx
vy=0 and vx=0
A football is punted down the field. At the top point of its trajectory,
it has no speed
it has no vertical speed
it has no horizontal speed
A football is punted down the field. At the top point of its trajectory,
it has no acceleration
it has no vertical acceleration
it has no horizontal acceleration
Gravity makes the horizontal speed of a projectile change.
True
False
An object is projected horizontally from a cliff. The time it takes to hit the ground is
more than if it was just dropped
less than if it was just dropped
the same amount of time than if it was just dropped
impossible to determine
An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees. Which is in the air for longer? (assume no air resistance)
25 degrees
65 degrees
same for both
An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees. Which one rises to a higher height? (assume no air resistance)
25 degrees
65 degrees
same for both
An object is shot from the ground (at 25 m/s) at 25 degrees and 65 degrees. Which one has the greater range? (assume no air resistance)
25 degrees
65 degrees
same for both
If a bullet is horizontally shot at the same moment another bullet is dropped from the same height, which will hit the ground first?
Shot Bullet
Dropped Bullet
Hit at Same Time
What is the horizontal acceleration of a projectile?
0 m/s2
10 m/s2
What is the vertical acceleration of a projectile?
0 m/s2
10 m/s2
A projectile with a horizontal component of motion will have a horizontal component of acceleration.
True
False
The horizontal velocity of a projectile changes by 10 m/s each second.
True
False
The horizontal velocity of a projectile is unaffected by the vertical velocity; these two components of motion are independent of each other.
True
False
A projectile with a vertical component of motion will have an upward component of acceleration.
True
False
The time that a projectile is in the air is dependent upon both the horizontal and vertical components of the initial velocity.
True
False
A ball is thrown horizontally from a cliff. At the same time, a bowling ball is dropped from the same height. Assuming air resistance can be ignored, which of the following statements is correct:
The bowling ball hits the ground first
Both the bowling ball and the baseball hit the ground at the same time
The baseball has the greater acceleration just before it hit the ground
The bowling ball has the greater acceleration just before it hit the ground
If air resistance can be neglected, what happens to the horizontal velocity of a basketball as it is thrown to the basket from the free-throw line?
increases
decreases
stays constant
