WorksheetsProjectile Motion
Total questions: 32
Worksheet time: 8hrs 0mins
Name
Class
Date
1.
At the top of a projectile's path above Earth, the vertical acceleration of an object is
a)
is zero
b)
goes from positive to negative
c)
goes from negative to positive
d)
remains unchanged
2.
A baseball was thrown with an initial velocity of 24m/s at an angle above the horizontal. It remained in the air for 2 seconds. Which of the following quantities was constant while the baseball was in the air?
a)
acceleration
b)
displacement
c)
position
d)
velocity
3.
A ball is thrown horizontally from the top of a building with an initial velocity of 13m/s. At the same time, a second ball is dropped from the top of the same building. Which of the following is the same for the two balls?
a)
Their final displacement
b)
Their paths as they fall
c)
Their initial horizontal velocities
d)
Their final vertical velocity as they reach the ground
4.
A 5 kg red ball is thrown horizontally at a speed of 4m/s from a height of 4 meters. A 8 kg green ball is thrown horizontally from the same height at a speed of 6m/s. Compared to the time it takes the red ball to reach the ground, the time it takes the green ball to reach the ground is which of the following?
a)
half as much
b)
twice as much
c)
four times as much
d)
the same
5.
Which of the following shapes is seen in the path of a projectile?
a)
straight line
b)
parabola
c)
circle
d)
hyperbola
6.
If you shoot a gun and at the same time drop a bullet which will hit the ground first? Why?
a)
The bullet that is shot, because it is going faster
b)
The dropped bullet, because gravity pulls on it.
c)
At the same time, because the x and y components are independent of each other.
d)
This cannot happen
7.
The initial velocity of a projectile has a horizontal component of 5m/s and a vertical component of 6m/s. At the highest point of the projectile's trajectory what is (A) the horizontal velocity (B) the vertical velocity?
a)
(A)25m/s, (B) 10m/s
b)
(A) 5m/s, (B) 0m/s
c)
(A) 10m/s, (B) 24m/s
d)
(A) 0m/s, (B) 3m/s
8.
If I throw a crayon straight up at 12 m/s, how fast is its velocity when I catch it at the same height?
a)
-6 m/s
b)
-12 m/s
c)
-18 m/s
d)
-24 m/s
9.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
-9.8 m/s2
c)
0 m/s
d)
-9.8 m/s
10.
The horizontal component of a projectile's velocity is independent of...
a)
it's range
b)
time
c)
the vertical component
d)
none of these
11.
Which of the following would NOT be considered a projectile?
a)
a cannonball thrown straight up
b)
a cannon ball rolling down a slope
c)
a cannonball rolling off a table
d)
a cannonball thrown in the air
12.
What can you say about motion in the x and y direction?
a)
x is dependent on y
b)
y is dependent on x
c)
They are dependent on each other.
d)
They are independent of each other.
13.
What acts on a projectile in the y direction that causes an object to travel in a parabolic arc?
a)
Friction
b)
Gravity
c)
Tension
d)
No force acting.
14.
The more mass an object has, the faster it will fall (assume there is no air resistance).
a)
True
b)
False
15.
An object is shot from the ground at 25 m/s... once at an angle of 25 degrees and once at an angle of 65 degrees. Which one rises to a higher height? (assume no air resistance)
a)
25 degrees
b)
65 degrees
c)
same for both
16.
A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How high did the cannonball travel?
a)
9963 m
b)
39,771 m
c)
7220 m
d)
17183.25 m
17.
A bullet is fired horizontally at a height of 1.3 meters at a velocity of 950 m/s. Assume no air resistance. How long until the bullet reaches the ground?
a)
0.52 s
b)
0.27 s
c)
0.13 s
d)
0.36 s
18.
A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?
a)
500.76 m
b)
31.63 m
c)
103.7 m
d)
305.05 m
19.
A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How long until the ball reaches the ground?
a)
0.45 s
b)
0.67 s
c)
0.22 s
d)
0.47 s
20.
A crazy squirrel jumps from a tree with a horizontal speed of 10 m/s to its ultimate demise. It hits the ground 2.0 s later. The horizontal distance from the base of the tree to where the squirrel strikes the ground is:
a)
2 m
b)
20 m
c)
5 m
d)
0.2 m
21.
If Vx and Vy are equal, what do you know about the angle the object was launched at?
a)
Greater than 45 degrees
b)
Less than 45 degrees
c)
At 45 degrees.
22.
What angle will give you the greatest range in the x direction?
a)
30 degrees
b)
45 degrees
c)
60 degrees
d)
90 degrees
23.
A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. What is the initial vertical component of the ball’s velocity? What is the horizontal component of the ball’s velocity?
a)
24.9 m/s; 60.1 m/s
b)
60.1 m/s; 24.9 m/s
c)
0 m/s; 65 m/s
d)
17183.25 m
24.
Does the horizontal component of a projectile's velocity change during its flight?
a)
Yes
b)
No
25.
A projectile is launched with a speed of 50 m/s at an angle of 25 degrees above the horizontal. What other angle could the projectile be launched at with the same speed to achieve the same range?
a)
65 degrees
b)
75 degrees
c)
45 degrees
d)
15 degrees
26.
Each of these projectiles was launched with the same speed. Which projectile had the greatest initial vertical velocity (Vyi) ?
a)
A
b)
B
c)
C
27.
Each of these projectiles was launched with the same speed. Which projectile had the greatest initial horizontal velocity (Vx) ?
a)
A
b)
B
c)
C
28.
Each of these projectiles was launched with the same speed. Which projectile would've had the greatest time of flight?
a)
A
b)
B
c)
C
29.
Each of these projectiles was launched with the same speed. What can you say about the launch angle of A & C?
a)
they both had the same launch angle
b)
their launch angles were complementary angles
c)
their launch angles were supplementary angles
d)
the launch angle of C was much larger than the launch angle of A
30.
A projectile strikes the ground with final vertical velocity of 30 m/s, and a horizontal velocity of 40 m/s. What is the final velocity (resultant) of the projectile?
a)
50 m/s
b)
40 m/s
c)
30 m/s
d)
60 m/s
31.
A gun is fired vertically from a car that is moving forward at a constant velocity. If the effects of air resistance are ignored, where does the bullet land?
a)
Behind the car
b)
In front of the car
c)
Inside of the car, right back in the gun
d)
to the side of the car
32.
When should a bomber plane release its bomb from its belly?
a)
Before it reaches its target
b)
When it is directly above its target
c)
After it has passed its target
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