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02c - Projectile Motion

Total questions: 30

Worksheet time: 53mins

Name
Class
Date
1.
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
2.
If you throw a baseball straight up, what is its acceleration at the highest point?
a)
-9.8 m/s2
b)
-9.8 m/s
c)
0 m/s2
d)
0 m/s
3.
The more mass an object has, the faster it will fall.
a)
True
b)
False
4.
If I throw a crayon straight up at 12m/s, how fast is its speed when i catch it at the same height?
a)
-6 m/s
b)
-12 m/s
c)
-18 m/s
d)
-24 m/s
5.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
-9.8 m/s2
6.
Velocity is different from speed in that velocity is speed in a given direction.
a)
True
b)
False
7.
What are the components of this vector?
a)
South and East
b)
South and West
c)
North and East
d)
North and West
8.
Consider drops of water leaking from a water faucet. As the drops fall they 
a)
remain at a relatively fixed distance from each other
b)
get farther apart
c)
get closer together
9.

If the time to get to the highest point is 2.6 s, what would be the total time in the air?

a)

2.6 s

b)

3.8 s

c)

5.2 s

d)

4.9 s

10.

In a projectile motion like the shown on the picture, the velocity with which the projectile hits the ground is...

a)

0 m/s

b)

the same as the initial velocity

c)

unknown

d)

9.8 m/s

11.
A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. What is the 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
12.
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
13.
A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?
a)
14.3 m
b)
30.55 m
c)
65 m
d)
43.55 m
14.
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
15.
At the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height. Which ball hits the ground first? 
a)
Neither- they hit at the same time
b)
the horizontally thrown ball
c)
the dropped ball
d)
None of these
16.
Two objects - one with mass m and the other with mass 2m - are released from rest at the same height (neglecting air resistance). Which object hits the ground first?
a)
mass m
b)
mass 2m
c)
both objects hit the ground at the same time
d)
unable to determine with information given
17.
What is the value of the angle t?
a)
27
b)
31
c)
38
d)
43
18.
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
19.

In a projectile motion we always have...

a)

1 component (x)

b)

3 components (x,y, and z)

c)

2 components (x and y)

d)

0 components

20.
What angle will give you the greatest range in the x direction?
a)
30 degrees
b)
45 degrees
c)
60 degrees
d)
90 degrees
21.

If you drop a banana, how fast is it going after 2 seconds?

a)

5 m/s

b)

10 m/s

c)

20 m/s

d)

30 m/s

22.

A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. Which of the following diagrams best shows the direction of the acceleration of the ball at point P?

a)
b)
c)
d)
e)
23.

A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. How do the speeds of the ball at the three points compare?

a)

vP < vQ < vR

b)

vR < vQ < vP

c)

vQ < vR < vP

d)

vQ < vR = vP

e)

vP = vQ < vR

24.

A projectile is fired with initial velocity vo at an angle θ0 with the horizontal and follows the trajectory shown above. Which of the following pairs of graphs best represents the vertical components of the velocity and acceleration, v and a, respectively, of the projectile as functions of time t?

a)
b)
c)
d)
e)
25.

What is the direction of the acceleration for any projectile?

a)

The direction the projectile is traveling.

b)

Down

c)

Up

d)

Sideways

26.
A vector is a quantity that had
a)
magnitude and time
b)
time and direction
c)
magnitude and direction
d)
direction and rhythm 
27.
A scalar is a quantity that had
a)
direction
b)
magnitude
c)
time
d)
color
28.
When representing velocity as a vector...
a)
the directino of the arrow shows the direction of motion
b)
the length represents speed
c)
the length of the arrow is drawn to a suitable scale
d)
all of these
29.
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
30.
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)
a)
25 degrees
b)
65 degrees
c)
same for both

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