class 9 science chapter 8 mcq :This is the 20+ mcqs to grow your knowledge. Learn More class 9 science chapter 8 mcq with this in-depth post
Questions For class 9 science chapter 8 mcq
A particle is moving in a circular path of radius r. The displacement after half a circle would be
(A) Zero
(B) π r
(C) 2r
(D) 2πr
The numerical ratio of displacement to distance for a moving object is
(A) Always less than 1
(B) Always equal to 1
(C) Always more than 1
(D) Equal or less than 1
From the given v - t graph, it can be inferred that the object is
(A) In uniform motion
(B) At rest
(C) In non-uniform motion
(D) Moving with uniform acceleration
A car goes from a town A to another town B with a speed of 40 km/h and returns back to the town A with a speed of 60 km/h. The average speed of the car during the complete journey is
(A) 48 km/h
(B) 50 km/h
(C) Zero
(D) None of these
In 12 minutes a car whose speed is 35km/h travels a distance of
(A) 3.5 km
(B) 7 km
(C) 14 km
(D) 28 km
Speed of 90 km/h when expressed in m/s is
(A) 2.5
(B) 90000
(C) 250
(D) 25
Slope of a velocity-time graph gives
(A) The distance
(B) The displacement
(C) The acceleration
(D) The speed
A car is travelling at a speed of 90 km/h. Brakes are applied so as to produce a uniform acceleration of -0.5 m/s². Find how far the car will go before it is brought to rest?
(A) 450 m
(B) 900 m
(C) 625 m
(D) 620 m
The ratio of speed to the magnitude of velocity when the body is moving in one direction is
(A) Less than 1
(B) Greater than 1
(C) Equal to 1
(D) Greater than or equal to 1
For a body performing motion with uniform speed, the distance - time graph is
(A) Straight line parallel to y-axis
(B) Straight line inclined to the time axis
(C) Straight line parallel to x-axis
(D) Curved line
An object travels 20 m in 5 seconds and then another 40 m in 5 seconds. What is the average speed of the object?
(A) 6 m/s
(B) 2 m/s
(C) 12 m/s
(D) 0 m/s
The S.I. unit of acceleration is
(A) m/s-²
(B) m/s
(C) m/s²
(D) m
The distance travelled by a vehicle can be measured with
(A) Speedometer
(B) Odometer
(C) Accelerator
(D) Ammeter
The equation of motion can be derived by using
(A) Distance - time graph
(B) Velocity-time graph
(C) Displacement - time graph
(D) Velocity - time graph for uniform motion
____describes how fast something is going, whereas,____describes how fast something is going in a certain direction.
(A) Rate, Velocity
(B) Rate, Speed
(C) Speed, Velocity
(D) Speed, Acceleration
The area under the speed-time graph gives the_____.
(A) Velocity
(B) Distance
(C) Acceleration
(D) Time
The speed at any instant of time is known as
(A) Velocity
(B) Given speed
(C) Average speed
(D) Instantaneous speed
A racing car has a uniform acceleration of 6 m/s2. In 10 seconds, it will cover
(A) 300 m
(B) 100 m
(C) 200 m
(D) 350 m
A car increases its speed from 20 km/h to 50 km/h in 10 seconds. Its acceleration is
(A) 30 m/s²
(B) 3 m/s²
(C) 18 m/s²
(D) 0.83 m/s²
A body performs an accelerated motion, with uniform speeThe motion of body is
(A) Linear
(B) Circular
(C) Parabolic
(D) Irregular
Final Words :
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