Motion Class 9 MCQ Online Test. We covered all the Motion Class 9 MCQ Online Test in this post for free so that you can practice well for the exam.
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Mock Test on Motion for Class 9th Students
The average velocity of an object
(a) is a scalar quantity.
(b) may be positive: zero or negative.
(c) is always positive.
(d) cannot be zero.
Option b – may be positive: zero or negative
A car starts from Bengaluru, goes 50 km in a straight line towards the South, immediately turns around, and returns to Bengaluru. The time taken for this round trip is 2h. The magnitude of the average velocity of the car for this round trip
(a) is zero
(b) is 50 km/h
(c) is 25km/h
(d) cannot be calculated without knowing acceleration
Option a – is zero
The speedometer of the car does not show its
(a) instantaneous velocity
(b) instantaneous speed
(c) average velocity
(d) Both (a) and (c)
Option d – Both (a) and (c)
The rate of change of displacement with time is called as …….
(a) force
(b) acceleration
(c) retardation
(d) velocity
Option d – velocity
The SI unit of velocity is
(a) m/sec
(b) m/sec²
(c) m/sec²
(d) m/sec²
Option a – m/sec
During …. motion of an object along a straight line, the change in velocity of the object for any time interval is zero.
(a) linear
(b) translational
(c) equilibrium
(d) uniform
Option d – uniform
Two parallel train tracks run from North to South. On one track train A is moving at a speed of 30 m/s from North to South. On the other track train, B is moving at a speed of 50 m/s from South to North. The relative velocity of train A with respect to train B is
(a) 30 m/s
(b) 80 m/s
(c) 20 m/s
(d) 100 m/s
Option b – 80 m/s
In negative acceleration, the velocity of a body
(a) is zero
(b) increases
(c) decreases
(d) remains constant
Option c – decreases
For a body moving with uniform acceleration its final velocity equals ………
(a) average velocity – initial velocity
(b) 2 x average velocity – initial velocity
(c) 2 x average velocity + initial velocity
(d) average velocity + initial velocity
Option b – 2 x average velocity – initial velocity
Find the acceleration (in m/s²) of a body that accelerates from 10 m/s to 20 m/s in 4 seconds.
(a) 7.5
(b) 5
(c) 15
(d) 2.5
Option d – 2.5
Consider the following statements. I. For a moving particle, distance can never be negative or zero while displacement can be. II. The rate of displacement with time is called speed. III. For a moving body, the average velocity can never be negative or zero. Which of the statements given above is/are correct?
(a) I, II and III
(b) I and III
(c) Only I
(d) II and III
Option c – Only I
Assertion (A) The speedometer of an automobile measure the average speed of the automobile. Reason (R) Average velocity is equal to total displacement per total time taken. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option d – A is false, but R is true
In which of the following cases of motions, the distance and displacement are equal?
(a) If the car is moving on a straight road.
(b) If the car is moving in a circular path.
(c) The pendulum is moving to and fro.
(d) The earth is revolving around the sun.
Option a – If the car is moving on a straight road
As the object covers unequal distances in equal intervals of time, it is said to be in ……… motion.
(a) uniform
(b) linear
(c) non-uniform
(d) equilibrium
Option c – non-uniform
Speed of body is
(a) the distance covered by a moving body in unit time.
(b) always equal to the velocity of the body.
(c) a vector quantity.
(d) None of the above
Option a – the distance covered by a moving body in unit time
The speed of an ant is 75 cm/sec. The ant travels in a day is
(a) 64800 m/day
(b) 648000 m/day
(c) 648000 cm/day
(d) 64800000 cm/day
Option b – 648000 m/day
A car travels from A to B at a speed of 40 km/h and returns back at a speed of 60 km/h. Its average speed will be
(a) 40 km/h
(b) 48 km/h
(c) 50 km/h
(d) 60 km/h
Option b – 48 km/h
A bus travels at a speed of 50 km/h to go from the origin of its destination at a distance of 300 km and travels at a speed of 60 km/h to return to the origin. What is the average speed of the bus?
(a) 54.55 km/h
(b) 55 km/h
(c) 55.55 km/h
(d) 54 km/h
Option a – 54.55 km/h
The speed of a particle or any instant of time is called it’s
(a) instantaneous speed
(b) instantaneous velocity
(c) displacement
(d) None of the above
Option a – instantaneous speed
A reference frame attached to the earth
(a) is an inertial frame.
(b) cannot be an inertial frame because the earth is revolving around the sun.
(c) maybe a non-inertial frame.
(d) None of the above
Option a – is an inertial frame
If the position of the object changes with respect to its surroundings in a given time. The object is said to be in
(a) motion
(b) rest
(c) only circular motion
(d) None of the above
Option a – motion
In oscillatory motion
(a) particle moves along a straight line.
(b) a particle moves in a circular path.
(c) a particle moves to and fro about a point.
(d) None of the above
Option c – a particle moves to and fro about a point
The motion of a sliding body on an inclined plane is an example of
(a) rectilinear motion.
(b) circular motion.
(c) oscillatory motion.
(d) rotational motion.
Option a – rectilinear motion
Which of the following is correct? ( Motion Class 9 MCQ Online Test )
(a) Displacement cannot be zero.
(b) The magnitude of displacement may be greater than the distance.
(c) Distance may be greater than or equal to the magnitude of displacement.
(d) Distance is always greater than the magnitude of displacement.
Option c – Distance may be greater than or equal to the magnitude of displacement
We covered all the motion class 9 mcq online test above in this post for free so that you can practice well for the exam.
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