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Grade 9 MOTION

Total questions: 40

Worksheet time: 39mins

Name
Class
Date
1.

Unit of velocity

a)

m/s

b)

m/s2

c)

ms

d)

ms

2.
Which graph shows an object not moving?
a)
A
b)
B
c)
C
d)
D
3.
Morgan walks 10 miles South. Trevor walks 10 miles North in the same amount of time.  They have:
a)
Different average speeds
b)
Different velocities
c)
Same velocity
d)
Same motion
4.
A car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds.  What is the acceleration of the car?
a)
.5 m/s/s
b)
.5 m/s
c)
2 m/s/s
d)
2 m/s
5.
A ball is rolled at a velocity of 12 m/sec.  After 36 seconds, it comes to a stop.  What is the   acceleration of the ball?
a)
3 m/s/s
b)
-3 m/s/s
c)
.33 m/s/s
d)
-.33 m/s/s
6.
This graph shows
a)
An object speeding up
b)
An object slowing down
c)
An object stopped
d)
An object moving at constant speed
7.

Which type of speed does the speedometer of a car measures?

a)

Average speed

b)

Instantaneous speed

c)

Uniform speed

d)

Increasing speed

8.

Area under (v-t) graph represents a physical quantity which has the unit

a)

m2

b)

m

c)

m3

d)

ms-1

9.

Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in the given Figure. Choose the correct statement.

a)

Car A is faster than car D

b)

Car B is the slowest

c)

Car D is faster than car C

d)

Car C is the slowest

10.

Calculate the total displacement travelled by the object in a given graph.

a)

200 m

b)

240 m

c)

300 m

d)

340 m

11.
During which interval is the object not moving?
a)
B to C
b)
C to D
c)
D to E
d)
only at point A
12.
During which interval is the object traveling at a constant velocity?
a)
B to C
b)
D to E
c)
F to G
d)
it traveling at a constant velocity during all of the intervals shown.
13.
Calculate the acceleration for segment A.
a)
2 m/s2
b)
20 m/s2
c)
-2 m/s2
d)
0 m/s2
14.
According to the graph how fast does the person travel in the first 5 seconds?
a)
2 m/s
b)
10 m/s
c)
12.5 m/s
d)
1 m/s
15.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
16.
The SI unit for acceleration is
a)
mph
b)
m/s
c)
m/s2
17.

If a puppy runs for 50 meters in 10 seconds , what was the puppies speed in kilometer per hour?

a)

5 m/s

b)

18m/hr

c)

18 km/s

d)

18 km/hr

18.

Which of the following is a vector quantity?

a)

Work

b)

Speed

c)

Velocity

d)

Force

e)

Accelaration

19.

A particle is moving in a circular path of radius r.

The displacement after half a circle would be:

a)

(a) Zero

b)

(b) πr

c)

(c) 2r

d)

(d) 2πr

20.

In which of the following cases of motions, the distance moved and the magnitude of the displacement are equal?

i. If the car is moving on a straight road

ii. If the car is moving in circular path

iii. The pendulum is moving to and fro

iv. The earth is moving around the sun

a)

(a) only(ii)

b)

(b) (i) and (iii)

c)

(c) (ii) and (iv)

d)

(d) only (i)

21.
David walks 3 km north, and then turns east and walks 4 km. What is the distance?
a)
7 km
b)
3 km
c)
4 km
d)
1 km
22.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
23.
The Standard Units for Speed is ?
a)
m/s (meters per second)
b)
ms (meters times seconds)
c)
mskg (meters times seconds kilograms)
d)
m/s*kg (meters per second kilograms)
24.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
25.
Janet drives her car, which changes speed every second. Her car is therefore __________
a)
accelerating
b)
constant
26.
Speed is different from velocity because
a)
Velocity has a direction
b)
Speed uses Distance /Time
c)
Velocity doesn't include time
d)
Velocity doesn't include distance
27.
Speed =
a)
distance / time
b)
time / distance
c)
distance * time
28.
You walk 10 meters to math class in 20 seconds. Your average speed is
a)
2 m/s
b)
0.5 m/s
c)
200 m/s
d)
5 m/s
29.
This graph shows
a)
An object stopped
b)
An object slowing down
c)
An object speeding up
d)
An object moving at constant speed
30.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
31.

The slope of speed - time graph gives

a)

speed

b)

velocity

c)

momentum

d)

acceleration

32.
Which line represents an object moving at a slower speed?
a)
A
b)
B
33.

The area under a velocity-time graph represents the...

a)

...acceleration.

b)

...distance travelled.

c)

...displacement.

d)

...average speed.

34.
The speed of the vehicle between points A-B is...
a)
12m/s
b)
8m/s
c)
10m/s
d)
16m/s
35.
The SI unit for acceleration is
a)
mph
b)
m/s
c)
m/s2
36.
Runner A (blue) has the same displacement as Runner B (black).
a)
False
b)
True
37.
Acceleration: is the rate of change in ___________.
a)
speed
b)
distance
c)
velocity 
d)
displacement 
38.

The numerical ratio of displacement to distance for a moving object is

(a)  

39.

----------------------- is the term used for negative acceleration.

(a)  

40.

Average speed of an object can never be ----------------

(a)