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WorksheetsREVISION PWS CLASS 9- CH.8 MOTION(PHYSICS)
Total questions: 20
Worksheet time: 12mins
If displacement∝(time)2, then
acceleration =0
accelaration is constant
accelaration is non uniform
The body is at rest
Velocity is non uniform
The body is accelerating non uniformly without respect to time
The body is retarding
The velocity is constant
There is no displacement
The body is accelerating with time
Which of the following is a vector quantity?
Work
Speed
Velocity
Force
Accelaration
What is the rate of change in velocity known as?
(a)
Ram travels at a speed of 20 km/hr while going to school. While coming back, he travels at a speed of 30 km/hr(due to less traffic). What his it’s average speed?
25km/hr
26km/hr
20km/hr
24km/hr
Cant be determined
A particle is moving in a circular path of radius r.
The displacement after half a circle would be:
(a) Zero
(b) πr
(c) 2r
(d) 2πr
When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be:
(a) + 2 m/s2
(b) − 2 m/s2
(c) − 0.5 m/s2
(d) + 0.5 m/s2
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) only(ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) only (i)
The slope of speed - time graph gives
speed
velocity
momentum
acceleration
Question 1. A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is
(a) zero km
(b) 10 km
(c) 30 km
(d) 50 km
Question 17.Four cars A, B, C and D are moving on a levelled, straight road. Their distance time graphs are shown in the figure below. Which of the following is the correct statement regarding the motion of these cars?
Car A is faster than car D
Car B is the slowest
Car D is faster than car C
Car C is the slowest
The speedometer of a car shows which of the following?
Uniform speed
Average Speed
Instantaneous Speed
Distance
Non uniform speed
Which of the following do you think travel in uniform velocity?
A car in a circular track
The Earth around the Sun
A man running in a straight line
A car travelling at uniform speed in a traffic road
If a puppy runs for 50 meters in 10 seconds , what was the puppies speed in kilometer per hour?
5 m/s
18m/hr
18 km/s
18 km/hr
Which equation will you use if you are given the values of u, v and a to find distance?
First eq of motion
Second eq of motion
Third eq Motion
Insufficient data
