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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) Can be positive, zero, or negative
(c) Is always positive
(d) Can never be zero
Option b – Can be positive, zero, or negative
A car starts from Bengaluru, travels 50 km south, then returns to Bengaluru. The round trip takes 2 hours. The magnitude of its average velocity is
(a) Zero
(b) 50 km/h
(c) 25 km/h
(d) Cannot be determined without acceleration
Option a – Zero
The speedometer of a car does not display
(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
(a) force
(b) Acceleration
(c) Retardation
(d) Velocity
Option d – Velocity
The SI unit of velocity is
(a) m/s
(b) m/s²
(c) m/s²
(d) m/s²
Option a – m/s
In … motion along a straight line, the change in velocity during any time interval is zero.
(a) Linear
(b) Translational
(c) Equilibrium
(d) Uniform
Option d – Uniform
Two trains are on parallel tracks running north-south. Train A moves at 30 m/s north to south, while Train B moves at 50 m/s 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 an object
(a) Is zero
(b) Increases
(c) Decreases
(d) Remains unchanged
Option c – Decreases
For uniform acceleration, the final velocity of an object is equal to
(a) Average velocity − Initial velocity
(b) 2 × Average velocity − Initial velocity
(c) 2 × Average velocity + Initial velocity
(d) Average velocity + Initial velocity
Option b – 2 × Average velocity − Initial velocity
A body accelerates from 10 m/s to 20 m/s in 4 seconds. Its acceleration is
(a) 7.5
(b) 5
(c) 15
(d) 2.5
Option d – 2.5
Consider these statements: I. Distance can never be negative or zero, but displacement can be. II. Speed is the rate of change of displacement with time. III. Average velocity can never be negative or zero for a moving body.
(a) I, II, and III
(b) I and III
(c) Only I
(d) II and III
Option c – Only I
Assertion (A): A car’s speedometer measures its average speed. Reason (R): Average velocity equals total displacement divided by total time.
(a) Both A and R are true, and R explains A correctly
(b) Both A and R are true, but R does not explain A correctly
(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 these cases are distance and displacement equal?
(a) A car moving on a straight road
(b) A car moving along a circular path
(c) A swinging pendulum
(d) The Earth orbiting the Sun
Option a – A car moving on a straight road
When an object covers unequal distances in equal time intervals, it is in … motion.
(a) Uniform
(b) Linear
(c) Non-uniform
(d) Equilibrium
Option c – Non-uniform
Speed of a body is defined as
(a) The distance covered per unit time
(b) Always equal to its velocity
(c) A Vector quantity
(d) None of the above
Option a – The distance covered per unit time
The speed of an ant is 75 cm/s. The distance it travels in a day is
(a) 64,800 m/day
(b) 648,000 m/day
(c) 648,000 cm/day
(d) 64,800,000 cm/day
Option b – 648,000 m/day
A car travels from A to B at 40 km/h and returns at 60 km/h. Its average speed is
(a) 40 km/h
(b) 48 km/h
(c) 50 km/h
(d) 60 km/h
Option b – 48 km/h
A bus travels 300 km at 50 km/h, then returns at 60 km/h. Its average speed is
(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 an object at a specific instant is called
(a) Instantaneous speed
(b) Instantaneous velocity
(c) Displacement
(d) None of the above
Option a – Instantaneous speed
A reference frame fixed to the Earth
(a) Is inertial
(b) Cannot be inertial because the Earth revolves around the Sun
(c) May be non-inertial
(d) None of the above
Option a – Is inertial
If an object changes position relative to its surroundings over time, it 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) The particle moves in a straight line
(b) The particle moves in a circular path
(c) The particle moves back and forth about a point
(d) None of the above
Option c – The particle moves back and forth about a point
The sliding of a 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 statement is correct?
(a) Displacement can never be zero
(b) Displacement can be greater than distance
(c) Distance can be greater than or equal to displacement
(d) Distance is always greater than displacement
Option c – Distance can be greater than or equal to 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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