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Kinematics 2-D

Total questions: 50

Worksheet time: 1hrs 24mins

Name
Class
Date
1.

Mack was skating to the park. He went 1.5 mi north, west for 0.75 mi, south 3 mi, and east 1.25 mi. What is Mack's total displacement?

a)

1.58 mi NW

b)

2.5 mi NE

c)

1.58 SE

d)

1.75 SW

2.
A change in velocity over time is known as:
a)
acceleration
b)
constant speed
c)
average speed
d)
displacement
3.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
4.
The unit we use to measure acceleration is ___. 
a)
meters / second 
b)
meters 
c)
seconds 
d)
meters / second / second 
5.
What happens to the velocity of a ball as it is dropped off a cliff? 
a)
It decreases at a uniform rate 
b)
It increases at a uniform rate 
c)
It is constant 
d)
It increases at a non-uniform rate
6.
What variable letter is range?
a)
X
b)
Y
c)
Vx
d)
Vy
7.
What variable letter is altitude?
a)
X
b)
Vx
c)
Y
d)
Vy
8.
What variable letter is horizontal velocity?
a)
X
b)
Y
c)
Vx
d)
Vy
9.
What variable letter is vertical velocity?
a)
X
b)
Y
c)
Vx
d)
Vy
10.
Does horizontal velocity change if you ignore air resistance?
a)
yes
b)
no
11.
Does vertical velocity change as a projectile rises and falls?
a)
yes 
b)
no
12.
What do the x & the y projectile formulas have in common, and can be used interchangeably?
a)
Vx
b)
Vy
c)
y
d)
t
13.
Does the vertical velocity have any effect on the horizontal velocity?
a)
yes
b)
no
14.
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
15.
If a bullet is horizontally shot at the same moment another bullet is dropped from the same height, which will hit the ground first?(neglect air resistance) 
a)
Shot Bullet
b)
Dropped Bullet
c)
Hit at Same Time
16.
If car A is horizontally driving off a cliff at the same moment car B is pushed from the same cliff, which has a larger vertical speed when they hit the ground?(neglect air resistance) 
a)
Car A
b)
Car B
c)
Same for Both
d)
heavier car
17.
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
18.
In the absence of air friction, the vertical component of a projectile's velocity doesn't change as the projectile moves. 
a)
True
b)
False
c)
Sometimes true
d)
Sometimes false
19.
In the absence of air friction, the horizontal component of a projectile's velocity doesn't change as the projectile moves. 
a)
True
b)
False
c)
Sometimes true
d)
Sometimes false
20.
Suppose an object is in free fall.(neglect air resistance) Each second the object falls _________
a)
the same distance as in the second before.
b)
a larger distance than in the second before.
c)
with the same instantaneous speed.
d)
with the same average speed.
21.
What is the horizontal acceleration of a projectile?(neglect air resistance)  
a)
0 m/s2
b)
9.8 m/s2
22.
The horizontal velocity of a projectile is unaffected by the vertical velocity; these two components of motion are independent of each other.  
a)
True
b)
False
23.
What force acts in the y direction that causes an object to travel in a parabolic arc?
a)
Friction
b)
Gravity
c)
Tension
d)
No force acting.
24.

A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity?What is the horizontal component of the cannonball’s velocity?

a)

-625 m/s; 625 m/s

b)

441.9 m/s; 441.9 m/s

c)

-441.9 m/s; 441.9 m/s

d)

0 m/s; 625 m/s

25.
What is the height of a horizontal projectile if it takes 3 seconds to hit the ground?
a)
3.00 m
b)
29.4 m
c)
44.1 m
d)
88.3 m
26.
The more mass an object has, the faster it will fall.
a)
True
b)
False
27.
What is the vertical acceleration of a projectile?
a)
0 m/s2
b)
-9.81 m/s2
28.
Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object has the greatest maximum height?
a)
A
b)
B
c)
Both objects reach the maximum height
d)
unable to determine with the given information
29.
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 m
b)
30 m
c)
65 m
d)
43 m
30.
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
31.
If I throw a crayon straight up at 12 m/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
32.
If you drop a banana, how fast is it going after 2 seconds?
a)
-4.9m/s
b)
-9.8m/s
c)
-19.6m/s
d)
-29.4m/s
33.
Corey stands on the Augusta Canal Bridge kicking stones into the water below. If Corey kicks a stone with a horizontal velocity of 3.5 m/s, and it lands in the water a horizontal distance of  5.40 m from where Corey is standing, what is the height of the bridge?
a)
11.6 m 
b)
32 m 
c)
10.8 m 
d)
2.3 m 
34.
A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How long until the cannonball hits the ground?
a)
75.4 s
b)
45.2 s
c)
62.3 s
d)
90.2 s
35.
If the horizontal component of the ball is 5 m/s, how far does the ball travel from point A to point B in the 6 seconds?
a)
30 m
b)
6 m
c)
1.2 m
d)
176 m
36.
A stomp rocket is shot with an initial vertical velocity of
35 m/s.  How long is it in the air?
a)
3,6 s
b)
7.1 s
c)
1.8 s
d)
343 s
37.
A boy throws a rock with a vertical velocity of 15 m/s.  How high does it rise above his hand?
a)
0.76 m
b)
11.5 m
c)
22.9 m
d)
46 m
38.

Which of the following statements are TRUE about the horizontal motion of a projectile?

a)

Projectiles have a constant horizontal velocity.

b)

Projectiles have a constant non-zero horizontal acceleration.

c)

The horizontal velocity of a projectile is unaffected by the vertical velocity; these two components of motion are independent of each other.

d)

The final horizontal velocity of a projectile is always equal to the initial horizontal velocity.

e)

As a projectile rises towards the peak of its trajectory, the horizontal velocity will decrease.

39.

A projectile is launched horizontally from the top of a 45.2-meter high cliff and lands a distance of 17.6 meters from the base of the cliff. Determine the magnitude of the launch velocity.

a)

5.8 m/s

b)

3 m/s

c)

52.8 m/s

d)

1.9 m/s

40.

Cupid wishes to shoot an arrow from the window of a tall building to hit a person 63.6 meters from the base of a building. The window is 32.8 meters above the ground. With what minimum speed must he fire the arrow in order for it to enter the correct person?

a)

2.59 m/s

b)

24.6 m/s

c)

4.9 m/s

d)

9.5 m/s

41.

Determine the magnitude of the resultant R in the image shown above.

a)

15.0 km

b)

11.2 km

c)

125 km

d)

None of the others are right.

e)

13.8 km

42.

Which equation would correctly give you the angle Θ for the resultant in the image above?

a)

tan Θ = (5/10)

b)

tan Θ = (10/5)

c)

sin Θ = (5/10)

d)

cos Θ = (5/10)

e)

none of the other answers are correct

43.

In the absence of air friction, an object dropped near the surface of the Earth experiences a constant acceleration of about 9.8 m/s2. This means that the

a)

speed of the object increases 9.8 m/s during each second

b)

speed of the object as it falls is 9.8 m/s

c)

object falls 9.8 meters during each second

d)

object falls 9.8 meters during the first second only

44.

Four projectiles, A, B, C, and D, were launched from, and returned to, level ground. The data table below shows the initial horizontal speed, initial vertical speed, and time of flight for each projectile. Which object had the greatest range?

a)

A

b)

B

c)

C

d)

D

45.

Which graph best represents the relationship between the pair of velocities of an object thrown upward at an angle from Earth’s surface and the time that elapses while it is in the air?

a)
b)
c)
d)
46.

A punter in a football game kicks the ball with an initial speed of 28.3 m/s at an angle of 60° with respect to the ground. The ball is in the air for a total of 5.00 s before hitting the ground. If we assume that air resistance is negligible, what would be the ball's horizontal displacement?

a)

14.2 m

b)

24.5 m

c)

70.8 m

d)

122.5 m

47.

A marble traveling at 3 m/s rolls off the edge of a 1 m high table. What is its initial vertical speed?

a)

-10 m/s

b)

0 m/s

c)

-3 m/s

d)

-15 m/s

48.

A soccer ball is kicked horizontally off a cliff. What information is needed to find the time to fall?

a)

The height of the cliff

b)

The initial speed of the ball

c)

The mass of the ball

d)

All of these

49.

The acceleration during the whole trip, on the horizontal component, is always...

a)

0 m/s2

b)

3.6 m/s2

c)

5 m/s2

d)

-9.8 m/s2

50.

Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?

a)
b)
c)
d)

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