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WorksheetsPhysics 9 Motion
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
A particle is moving in a circular path of radius r. The displacement after half a circle would be :
a)
2r
b)
0.0
c)
Pi * r
d)
2 * Pi * r
2.
The numerical ratio of displacement to distance for a moving object is
a)
equal to 1 or less than 1
b)
always less than 1
c)
equal to 1 or more than 1
d)
always more than 1
3.
A boy is sitting on a merry-go-round which is moving with a constant speed of 10 m/s. This means that the boy is
a)
in accelerated motion
b)
at rest
c)
moving with no acceleration
d)
moving with uniform velocity
4.
In which of the following cases of motion, the distance moved and the magnitude of displacement are equal ?
a)
if the car is moving on straight road
b)
if the car is moving on circular road
c)
if the pendulum is moving to and fro
d)
if a planet is moving around the sun
5.
The speed of a moving object is determined to be 0.06 m/s. This speed is equal to
a)
0.216 km/h
b)
2.16 km/h
c)
1.08 km/h
d)
0.0216 km/h
6.
A freely falling object travels 4.9 m in 1st second, 14.7 m in 2nd second, 24.5 m in 3rd second, and so on.
This data shows that the motion of a freely falling object is a case of :
a)
uniform acceleration
b)
uniform motion
c)
no acceleration
d)
uniform velocity
7.
When a car runs on a circular track with a uniform speed, its velocity is said to be changing. This is because
a)
the direction of car varies continuously
b)
the car has a uniform acceleration
c)
the car travels unequal distances in equal time intervals
d)
the car travels equal distances in unequal time intervals
8.
Which of the following statement is correct regarding velocity and speed of a moving body ?
a)
velocity of a moving body is its speed in a given direction
b)
velocity of a moving body is always higher than its speed
c)
speed of a moving body is always higher than its velocity
d)
speed of a moving body is its velocity in a given direction
9.
Which of the following can sometimes be 'zero' for a moving body ?
(1) average velocity
(2) distance travelled
(3) average speed
(4) displacement
a)
1 and 4
b)
Only 1
c)
1 and 2
d)
Only 4
10.
When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then retardation will be
a)
0.5 m/s2
b)
- 0.5 m/s2
c)
2 m/s2
d)
- 2 m/s2
11.
Which of the following could not be a unit of speed ?
a)
s/m
b)
km/h
c)
m/s
d)
mm/s
12.
One of the following is not a vector quantity. This one is
a)
speed
b)
displacement
c)
acceleration
d)
velocity
13.
Which of the following could not be a unit of acceleration ?
a)
km/s
b)
m/s2
c)
cm/s2
d)
km/s2
14.
A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is :
a)
1 m/s2
b)
3.6 m/s2
c)
2 m/s2
d)
5 m/s2
15.
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be
a)
28 m/s
b)
16 m/s
c)
12 m/s
d)
8 m/s
16.
The slope of a speed-time graph gives
a)
acceleration
b)
distance travelled
c)
velocity
d)
displacement
17.
The area under a speed-time graph represents a physical quantity which has the unit of
a)
m2
b)
m/s2
c)
m/s
d)
m
18.
If the displacement of an object is proportional to the square of time, then the object is moving with
a)
uniform acceleration
b)
uniform velocity
c)
increasing acceleration
d)
decreasing acceleration
19.
A car of mass 1000 kg is moving with a velocity of 10 m/s. If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of car at the end of 25 s will be :
a)
10 m/s
b)
40 m/s
c)
25 m/s
d)
250 m/s
20.
A motorcycle is being driven at a speed of 20 m/s when brakes are applied to bring it to rest in five seconds. The deceleration produced in this case will be
a)
4 m/s2
b)
- 4 m/s2
c)
0.25 m/s2
d)
- 0.25 m/s2
21.
A sprinter is running along the circumference of a big sports stadium with constant speed. Which of the following do you think is changing in this case ?
a)
direction in which the sprinter is running
b)
magnitude of acceleration being produced
c)
distance covered by the sprinter per second
d)
centripetal force acting on the sprinter
22.
A student draws a distance-time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph ?
a)
the distance travelled by the scooter is zero in this section
b)
the scooter has uniform speed in this section
c)
the distance travelled by scooter is the maximum in this section
d)
the distance travelled by the scooter is the minimum in this section
23.
Which one of the following is most likely not a case of uniform circular motion ?
a)
motion of a racing car on a circular track
b)
motion of the earth around the sun
c)
motion of a toy train on a circular track
d)
motion of hours' hand on the dial of a clock
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