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Motion in plane 2

Total questions: 120

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

The value of (i-j).(2i-j+k) is:

a)

-3

b)

+3

c)

0

d)

2

2.

If the dot product of two vectors is 0 then the angle between them (in degrees) will be:

a)

0

b)

180

c)

60

d)

90

3.

The magnitude of vector i-j-k is

a)

-1

b)

+1

c)

3\sqrt{3}  

d)

none of these

4.

The x component of velocity is  5 2\sqrt{2} km/h and the actual velocity is 10 km/hr then its y component (in km/h) is:

a)

5 2\sqrt{2}  

b)

10

c)

2 10\sqrt{10}  

d)

2 15\sqrt{15}  

5.

The angle betweeen the vectors (i+j) and (-i+j) (in degrees) is:

a)

0

b)

45

c)

90

d)

180

6.

The value of x, so that xi+0.4j+0.8k is a unit vector is:

a)

1

b)

2\sqrt{2}

c)

-0.2

d)

0.2\sqrt{0.2}

7.

A vector when added to 2i-j+k and -i-j+k gives null vector. The vector is:

a)

i-2j+2k

b)

-i+2j-2k

c)

2i-2j+2k

d)

2i-j+2k

8.

The angle made by a vector i+j with y axis is:

a)

00

b)

450

c)

600

d)

900

9.

Choose the incorrect option:

a)

A→\overrightarrow{A} . B→\overrightarrow{B} = B→\overrightarrow{B} . A→\overrightarrow{A}

b)

i.j=0

c)

k.k=0

d)

j.j=1

10.

The angle between two equal vectors so that there resultant is equal in magnitude of either,will be:

a)

450

b)

600

c)

900

d)

1200

11.

What is a projectile?

a)

any object that is thrown

b)

an object that has multiple forces acting upon it

c)

an object is thrown in the air with some initial velocity and then allowed to move under the action of gravity alone

d)

none of the above

12.
An example of projectile motion is...
a)
a golf ball being hit
b)
a rocket
c)
a water fountain
d)
all of the above
13.
Projectiles move in which two directions?
a)
up and down
b)
left and right
c)
horizontal and vertical
d)
east and west
14.
The shape of the path a projectile follows...
a)
circular
b)
linear
c)
wavy
d)
parabolic
15.
A projectile will accelerate downward because gravity is acting on it.
a)
vertical motion
b)
horizontal motion
c)
circular motion
d)
linear motion
16.
How can you describe the motion on the horizontal axis if you ignore air resistance?
a)
acceleration due to gravity
b)
constant velocity
c)
varying acceleration
d)
motionless
17.
As a projectile moves through the air, the motion on y axis is best described as ____,
a)
free fall acceleration
b)
uniform motion
c)
varying speeds
d)
constant velocity
18.
What is the vertical acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2 down
c)
4.9 m/s2 down
d)
12 m/s down
19.
When a ball is projected horizontally, what is its initial vertical velocity?
a)
10 m/s
b)
0 m/s
c)
not enough information given
d)
the velocity given in the problem
20.

If you throw a baseball straight up, what is its velocity at the highest point?

a)

about 10 m/s2

b)

about 10 m/s

c)

0 m/s2

d)

0 m/s

21.

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

a)
b)
c)
d)
22.
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
23.

A package is dropped from an airplane, where will the package hit the ground?

a)

A

b)

B

c)

C

24.

A skateboarder rolls off a bridge into the river as shown. If the skateboarder was originally moving at 7.0 m/s, how much time did the skateboarder spend in the air?

a)

1.3 s

b)

0.79 s

c)

38.5 s

d)

0.70 s

e)

Not enough information given.

25.

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

a)

2m

b)

10m

c)

they both will hit the ground at the same time

26.

The path followed by a projectile is also known as its

a)

trajectory

b)

range

c)

height

d)

vertical displacement

27.

What variable letter is altitude or height?

a)

dx

b)

vx

c)

dy

d)

vy

28.

What variable letter is range or horizontal displacement?

a)

dx

b)

vx

c)

dy

d)

vy

29.

Which projectile has a longer range?

a)

0°

b)

45°

c)

90°

d)

they are equal

30.

θ=90o\theta=90^o  

Projectile motion at this angle is also called as.....

a)

free fall

b)

horizontal projectile

c)

vertical projectile

31.

An increase or decrease in speed or change in direction is known as-

a)

acceleration

b)

time

c)

speed

d)

velocity

32.

Average speed is calculated by-

a)

Total time/Total distance

b)

Total speed/ Total acceleration

c)

Total distance/Total time

d)

Total velocity/Total distance

33.

If a runner is increasing her speed, would her initial speed be more or less than her final speed?

a)

It would be the same

b)

It would be more

c)

It would be less

d)

It would depend on what speed she started at and what speed she ended at

34.

A horizontal line on a distance versus time graph represents an object that is-

a)

gaining speed

b)

slowing down

c)

not moving at all

d)

maintaining a constant speed

35.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
36.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
37.

the magnitude of displacement can never be ________ than the distance travelled by the body

a)

lesser

b)

equal

c)

greater

d)

not greater

38.

___________ of an object between two points is the shortest distance between these points.

a)

distance

b)

speed

c)

displacement

d)

none of above

39.

Slope of displacement -time graph gives

a)

velocity

b)

speed

c)

acceleration

d)

displacement

40.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

41.

An increase or decrease in speed or change in direction is known as-

a)

acceleration

b)

time

c)

speed

d)

velocity

42.

Average speed is calculated by-

a)

Total time/Total distance

b)

Total speed/ Total acceleration

c)

Total distance/Total time

d)

Total velocity/Total distance

43.

If a runner is increasing her speed, would her initial speed be more or less than her final speed?

a)

It would be the same

b)

It would be more

c)

It would be less

d)

It would depend on what speed she started at and what speed she ended at

44.

A horizontal line on a distance versus time graph represents an object that is-

a)

gaining speed

b)

slowing down

c)

not moving at all

d)

maintaining a constant speed

45.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
46.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
47.

the magnitude of displacement can never be ________ than the distance travelled by the body

a)

lesser

b)

equal

c)

greater

d)

not greater

48.

___________ of an object between two points is the shortest distance between these points.

a)

distance

b)

speed

c)

displacement

d)

none of above

49.

Slope of displacement -time graph gives

a)

velocity

b)

speed

c)

acceleration

d)

displacement

50.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

51.

An increase or decrease in speed or change in direction is known as-

a)

acceleration

b)

time

c)

speed

d)

velocity

52.

Average speed is calculated by-

a)

Total time/Total distance

b)

Total speed/ Total acceleration

c)

Total distance/Total time

d)

Total velocity/Total distance

53.

If a runner is increasing her speed, would her initial speed be more or less than her final speed?

a)

It would be the same

b)

It would be more

c)

It would be less

d)

It would depend on what speed she started at and what speed she ended at

54.

A horizontal line on a distance versus time graph represents an object that is-

a)

gaining speed

b)

slowing down

c)

not moving at all

d)

maintaining a constant speed

55.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
56.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
57.

the magnitude of displacement can never be ________ than the distance travelled by the body

a)

lesser

b)

equal

c)

greater

d)

not greater

58.

___________ of an object between two points is the shortest distance between these points.

a)

distance

b)

speed

c)

displacement

d)

none of above

59.

Slope of displacement -time graph gives

a)

velocity

b)

speed

c)

acceleration

d)

displacement

60.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

61.

An increase or decrease in speed or change in direction is known as-

a)

acceleration

b)

time

c)

speed

d)

velocity

62.

Average speed is calculated by-

a)

Total time/Total distance

b)

Total speed/ Total acceleration

c)

Total distance/Total time

d)

Total velocity/Total distance

63.

If a runner is increasing her speed, would her initial speed be more or less than her final speed?

a)

It would be the same

b)

It would be more

c)

It would be less

d)

It would depend on what speed she started at and what speed she ended at

64.

A horizontal line on a distance versus time graph represents an object that is-

a)

gaining speed

b)

slowing down

c)

not moving at all

d)

maintaining a constant speed

65.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
66.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
67.

the magnitude of displacement can never be ________ than the distance travelled by the body

a)

lesser

b)

equal

c)

greater

d)

not greater

68.

___________ of an object between two points is the shortest distance between these points.

a)

distance

b)

speed

c)

displacement

d)

none of above

69.

Slope of displacement -time graph gives

a)

velocity

b)

speed

c)

acceleration

d)

displacement

70.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

71.

The value of (i-j).(2i-j+k) is:

a)

-3

b)

+3

c)

0

d)

2

72.

If the dot product of two vectors is 0 then the angle between them (in degrees) will be:

a)

0

b)

180

c)

60

d)

90

73.

The magnitude of vector i-j-k is

a)

-1

b)

+1

c)

3\sqrt{3}  

d)

none of these

74.

The x component of velocity is  5 2\sqrt{2} km/h and the actual velocity is 10 km/hr then its y component (in km/h) is:

a)

5 2\sqrt{2}  

b)

10

c)

2 10\sqrt{10}  

d)

2 15\sqrt{15}  

75.

The angle betweeen the vectors (i+j) and (-i+j) (in degrees) is:

a)

0

b)

45

c)

90

d)

180

76.

The value of x, so that xi+0.4j+0.8k is a unit vector is:

a)

1

b)

2\sqrt{2}

c)

-0.2

d)

0.2\sqrt{0.2}

77.

A vector when added to 2i-j+k and -i-j+k gives null vector. The vector is:

a)

i-2j+2k

b)

-i+2j-2k

c)

2i-2j+2k

d)

2i-j+2k

78.

The angle made by a vector i+j with y axis is:

a)

00

b)

450

c)

600

d)

900

79.

Choose the incorrect option:

a)

A→\overrightarrow{A} . B→\overrightarrow{B} = B→\overrightarrow{B} . A→\overrightarrow{A}

b)

i.j=0

c)

k.k=0

d)

j.j=1

80.

The angle between two equal vectors so that there resultant is equal in magnitude of either,will be:

a)

450

b)

600

c)

900

d)

1200

81.

What is a projectile?

a)

any object that is thrown

b)

an object that has multiple forces acting upon it

c)

an object is thrown in the air with some initial velocity and then allowed to move under the action of gravity alone

d)

none of the above

82.
An example of projectile motion is...
a)
a golf ball being hit
b)
a rocket
c)
a water fountain
d)
all of the above
83.
Projectiles move in which two directions?
a)
up and down
b)
left and right
c)
horizontal and vertical
d)
east and west
84.
The shape of the path a projectile follows...
a)
circular
b)
linear
c)
wavy
d)
parabolic
85.
A projectile will accelerate downward because gravity is acting on it.
a)
vertical motion
b)
horizontal motion
c)
circular motion
d)
linear motion
86.
How can you describe the motion on the horizontal axis if you ignore air resistance?
a)
acceleration due to gravity
b)
constant velocity
c)
varying acceleration
d)
motionless
87.
As a projectile moves through the air, the motion on y axis is best described as ____,
a)
free fall acceleration
b)
uniform motion
c)
varying speeds
d)
constant velocity
88.
What is the vertical acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2 down
c)
4.9 m/s2 down
d)
12 m/s down
89.
When a ball is projected horizontally, what is its initial vertical velocity?
a)
10 m/s
b)
0 m/s
c)
not enough information given
d)
the velocity given in the problem
90.

If you throw a baseball straight up, what is its velocity at the highest point?

a)

about 10 m/s2

b)

about 10 m/s

c)

0 m/s2

d)

0 m/s

91.

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

a)
b)
c)
d)
92.
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
93.

A package is dropped from an airplane, where will the package hit the ground?

a)

A

b)

B

c)

C

94.

A skateboarder rolls off a bridge into the river as shown. If the skateboarder was originally moving at 7.0 m/s, how much time did the skateboarder spend in the air?

a)

1.3 s

b)

0.79 s

c)

38.5 s

d)

0.70 s

e)

Not enough information given.

95.

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

a)

2m

b)

10m

c)

they both will hit the ground at the same time

96.

The path followed by a projectile is also known as its

a)

trajectory

b)

range

c)

height

d)

vertical displacement

97.

What variable letter is altitude or height?

a)

dx

b)

vx

c)

dy

d)

vy

98.

What variable letter is range or horizontal displacement?

a)

dx

b)

vx

c)

dy

d)

vy

99.

Which projectile has a longer range?

a)

0°

b)

45°

c)

90°

d)

they are equal

100.

θ=90o\theta=90^o  

Projectile motion at this angle is also called as.....

a)

free fall

b)

horizontal projectile

c)

vertical projectile

101.

An increase or decrease in speed or change in direction is known as-

a)

acceleration

b)

time

c)

speed

d)

velocity

102.

Average speed is calculated by-

a)

Total time/Total distance

b)

Total speed/ Total acceleration

c)

Total distance/Total time

d)

Total velocity/Total distance

103.

If a runner is increasing her speed, would her initial speed be more or less than her final speed?

a)

It would be the same

b)

It would be more

c)

It would be less

d)

It would depend on what speed she started at and what speed she ended at

104.

A horizontal line on a distance versus time graph represents an object that is-

a)

gaining speed

b)

slowing down

c)

not moving at all

d)

maintaining a constant speed

105.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
106.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
107.

the magnitude of displacement can never be ________ than the distance travelled by the body

a)

lesser

b)

equal

c)

greater

d)

not greater

108.

___________ of an object between two points is the shortest distance between these points.

a)

distance

b)

speed

c)

displacement

d)

none of above

109.

Slope of displacement -time graph gives

a)

velocity

b)

speed

c)

acceleration

d)

displacement

110.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

111.

An increase or decrease in speed or change in direction is known as-

a)

acceleration

b)

time

c)

speed

d)

velocity

112.

Average speed is calculated by-

a)

Total time/Total distance

b)

Total speed/ Total acceleration

c)

Total distance/Total time

d)

Total velocity/Total distance

113.

If a runner is increasing her speed, would her initial speed be more or less than her final speed?

a)

It would be the same

b)

It would be more

c)

It would be less

d)

It would depend on what speed she started at and what speed she ended at

114.

A horizontal line on a distance versus time graph represents an object that is-

a)

gaining speed

b)

slowing down

c)

not moving at all

d)

maintaining a constant speed

115.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
116.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
117.

the magnitude of displacement can never be ________ than the distance travelled by the body

a)

lesser

b)

equal

c)

greater

d)

not greater

118.

___________ of an object between two points is the shortest distance between these points.

a)

distance

b)

speed

c)

displacement

d)

none of above

119.

Slope of displacement -time graph gives

a)

velocity

b)

speed

c)

acceleration

d)

displacement

120.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

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