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WorksheetsProjectile Motion
Total questions: 41
Worksheet time: 52mins
At what point is vy= 0 m/s?
A
B
C
D
None of these points
Who do you agree with?
Anita: “A projectile’s vx changes because of gravity, and its vy remains constant.”
Barry: “Both vx and vy are constant.”
Chris: “A projectile has no acceleration in the vertical dimension but it does accelerate horizontally.”
Dave: “A projectile has vertical acceleration and a constant horizontal velocity”
A ball is thrown into the air at some angle, with initial velocities vx (horizontal) and vy (vertical). At the very top of the ball’s path:
What is its velocity in the vertical direction?
vy
Greater than vy
Zero
In the absence of air resistance, the angle at which a thrown ball will go the farthest is?
90°
30°
60°
45°
The fact that an apple and a watermelon, dropped simultaneously from the same height, would hit the ground at the same time indicates that
you don't like apples or watermelons.
greater masses have greater acceleration.
lesser masses have greater acceleration.
acceleration is independent of mass.
The initial horizontal velocity (Vxi) of a projectile is ____ its final horizontal velocity (Vxf).
less than
equal to
greater than
What is true about the vertical velocity of a projectile launched horizontally?
It is initially at its maximum value.
It increases due to gravity as it falls.
It remains constant throughout its trajectory.
It decreases as it falls due to gravity.
If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?
2m
10m
they both will hit the ground at the same time
Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a
horizontal velocity?
the launched ball
the dropped ball
they both hit at the same time
The path followed by a projectile is also known as its
trajectory
range
height
vertical displacement
Once a projectile is launched, what is the only force that affects its motion?
mass
friction
inertia
gravity
The vertical component of a projectile’s motion is (a) to the horizontal component of its
motion.
Which of the following statements about the horizontal and vertical components of projectile motion is true?
Changes in the horizontal component occur only when the vertical component changes.
Both the horizontal and vertical components are always constant.
The vertical component changes while the horizontal component stays the same.
The horizontal and vertical components are dependent of each other.
In a projectile motion we always have...
1 component (x)
3 components (x,y, and z)
2 components (x and y)
0 components
What is the direction of the acceleration for any projectile?
The direction the projectile is traveling.
Down
Up
Sideways
A projectile is launched from the topic of a building that is 30 meters high. The projectile lands 45 meters away from the base.
How much time does it take for the projectile to hit the ground?
6.1 s
2.5 s
3.1 s
1.8 s
A child who is running 2 m/s jumps out horizontally from the edge of an embankment and reaches the river in 2.8 seconds.
What is the final speed/landing speed of the child hits the water?
24 m/s
5.5 m/s
30 m/s
27.5 m/s
A child who is running 2 m/s jumps out horizontally from the edge of an embankment and reaches the river in 2.8 seconds.
How high was the embankment?
38.4 m
76.9 m
13.7 m
1.8 m
A child who is running 2 m/s jumps out horizontally from the edge of an embankment and reaches the river in 2.8 seconds.
How far from the base of the embankment did the child hit the water?
0.7 m
15.7 m
5.6 m
1.4 m
A child who is running 2 m/s jumps out horizontally from the edge of an embankment and reaches the river in 2.8 seconds.
What is the vertical velocity of the child right before he hits the water?
-13.7 m/s
-3.5 m/s
-76.8 m/s
-27.4 m/s
-9.8 m/s2
What is the vertical acceleration of a projectile?(neglect air resistance)
0 m/s2
9.8 m/s2
What variable letter is range or horizontal displacement?
ΔX
vx
ΔY
vy
What variable is initial vertical velocity?
Vx
ΔX
Vyf
Vyi
What variable is final vertical velocity?
Vx
X
Vyi
Vyf
What variable is horizontal velocity?
ΔX
vx
ΔY
vy
Which projectile has a longer range?
0°
45°
90°
they are equal
In the diagram, which letter represents the horizontal displacement ΔX?
A
B
C
D
In the diagram, which letter represents the vertical displacement ΔY ?
A
B
C
D
What happens to the vertical velocity of a projectile as it goes down?
increases
decreases
stays the same
none of these
What happens to the horizontal velocity of a projectile as it travels along the curved path?
increases
decreases
stays the same
none of these
When a rock that was thrown upwards with a velocity of 14 m/s comes back to its starting point, what is its velocity?
0 m/s
14 m/s
- 7m/s
-14 m/s
An object is thrown horizontally from a cliff. The time it takes to fall to the ground is
more than if it was just dropped
the same amount of time than if it was just dropped
less than if it was just dropped
impossible to determine
In projectile motion, the horizontal velocity is always constant.
True
False
A ball rolls off a table and strikes the floor, as shown. If the time the ball spent in the air was 0.58 s, how fast did the ball leave the table?
3.6 m/s
1.2 m/s
2.9 m/s
0.99 m/s
If launched horizontally projectiles (No angle), Vyi is always _________
accelerating
positive
negative
zero
Vertical displacement will be ______________ with horizontal motion (projectiles) because the object will be falling.
constant
posiitve
negative
zero
If the initial horizontal velocity (Vxi) of a projectile is 5 m/s, what is the final horizontal velocity? (Vxf)?
5 m/s
10 m/s
-15 m/s
7.5 m/s
At what point is vx= 0 m/s?
A
B
C
D
None of these points
The only variable that horizontal motion (x axis) and vertical motion (y axis) have in common is ...
range
time
gravity
height
