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force and Laws of motion Class 9 mcq Online test. We covered all the force and Laws of 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 force and Laws of motion for Class 9 Students
Assertion (A): An object with non-zero acceleration can have a constant velocity. Reason (R): Acceleration refers to the rate at which velocity changes.
(a) Both A and R are correct, and R explains A correctly
(b) Both A and R are correct, but R does not explain A correctly
(c) A is correct, but R is incorrect
(d) A is incorrect, but R is correct
Option d – A is incorrect, but R is correct
In the equation of motion v = u + at, the term ‘u’ stands for
(a) Initial velocity
(b) Final velocity
(c) Kinetic energy
(d) Potential energy
Option a – Initial velocity
The first equation of motion establishes the relationship between
(a) Position and time
(b) Velocity and time
(c) Position and velocity
(d) Velocity and acceleration
Option b – Velocity and time
A race car moves from rest to 50 m/s in 25 seconds along a straight track with uniform acceleration. The total distance covered is
(a) 625 m
(b) 1250 m
(c) 2500 m
(d) 50 m
Option a – 625 m
The second equation of motion links
(a) Velocity and time
(b) Position and time
(c) Position and velocity
(d) Velocity and acceleration
Option b – Position and time
If an object moves with a constant non-zero acceleration for a certain time interval, the distance it travels in that interval
(a) Depends on its initial velocity
(b) Is independent of its initial velocity
(c) Increases linearly with time
(d) Depends on its initial position
Option a – Depends on its initial velocity
A ball is thrown upward and follows a parabolic path before landing. Which of the following remains unchanged?
(a) The ball’s kinetic energy
(b) The ball’s speed
(c) The horizontal velocity component
(d) The vertical velocity component
Option c – The horizontal velocity component
Ball P is dropped vertically, and Ball Q is projected horizontally at the same speed from the same height at the same time. Ignoring air resistance
(a) Ball P will land first
(b) Ball Q will land first
(c) Both will land at the same time
(d) Their masses will determine the landing time
Option c – Both will land at the same time
Radhika walks 50 m south from her house, turns left and walks 20 m, then turns north and walks 30 m. She then heads home. The direction she is now walking is
(a) North
(b) South-East
(c) North-West
(d) West
Option c – North-West
To achieve maximum horizontal distance, a cricket ball should be struck at an angle of
(a) 60° to the horizontal
(b) 45° to the horizontal
(c) 30° to the horizontal
(d) 15° to the horizontal
Option b – 45° to the horizontal
Which of the following statements is incorrect?
(a) If velocity and acceleration have opposite signs, the object slows down
(b) If velocity is zero at an instant, acceleration must also be zero at that instant
(c) If velocity is zero for a certain time interval, acceleration is zero during that time
(d) If position and velocity have opposite signs, the object is moving toward the origin
Option b – If velocity is zero at an instant, acceleration must also be zero at that instant
For a car moving in a straight line with speed v in time t, if s = vt, the motion is
(a) Uniformly accelerated
(b) Non-uniformly accelerated
(c) With uniform velocity
(d) With non-uniform velocity
Option c – With uniform velocity
The acceleration of a particle at a specific instant is called
(a) Average acceleration
(b) Instantaneous acceleration
(c) Average velocity
(d) None of the above
Option b – Instantaneous acceleration
Consider these statements: I. Negative acceleration means velocity increases with time. II. Non-uniform acceleration occurs if the magnitude, direction, or both change during motion. III. Zero acceleration means velocity is constant.
(a) I and II
(b) II and III
(c) I and III
(d) Only II
Option b – II and III
Which of these statements is false?
(a) A body can have zero velocity and still be accelerating
(b) A body can have a constant velocity but varying speed
(c) A body can have a constant speed but changing velocity
(d) A body’s velocity direction can change while acceleration is constant
Option b – A body can have a constant velocity but varying speed
If an object moves at constant velocity, which statement is incorrect?
(a) It moves along a straight line
(b) Its speed changes with time
(c) Its acceleration is zero
(d) Its displacement increases uniformly over time
Option d – Its displacement increases uniformly over time
In a vacuum, a coin, a feather, and a mango are dropped from the same height at the same time. The times they take to hit the ground are t₁, t₂, and t₃ respectively. The result will be
(a) t₁ > t₂ > t₃
(b) t₁ > t₃ > t₂
(c) t₃ > t₁ > t₂
(d) t₁ = t₂ = t₃
Option d – t₁ = t₂ = t₃
A curved distance-time graph represents
(a) Uniform speed
(b) Constant displacement
(c) Uniform momentum
(d) Non-uniform speed
Option d – Non-uniform speed
The distance-time graph for an object moving at constant speed is
(a) A point
(b) A circle
(c) A straight line
(d) A curve
Option c – A straight line
The slope of a distance-time graph indicates
(a) Acceleration
(b) Momentum
(c) Mass
(d) Speed
Option d – Speed
For a particle under constant force, its displacement-time graph is
(a) A straight line
(b) A circle
(c) A parabola
(d) Any curve depending on initial conditions
Option c – A parabola
If an object is stationary, its time (X-axis) vs distance (Y-axis) graph will be
(a) Vertical
(b) Horizontal
(c) A 45° upward slope
(d) A 45° downward slope
Option b – Horizontal
A particle starts from rest and moves with uniform acceleration along a straight path. The percentage increase in displacement during the 6th second compared to the 5th second is approximately
(a) 11%
(b) 22%
(c) 33%
(d) 44%
Option b – 22%
The motion of a freely falling body is an example of
(a) Non-uniform acceleration
(b) Uniform acceleration
(c) Unique acceleration
(d) Special acceleration
Option b – Uniform acceleration
A brick is released vertically from an aircraft flying 2 km above the ground. It will fall with
(a) Constant speed
(b) Constant velocity
(c) Constant acceleration
(d) Constant speed initially, then constant acceleration
Option c – Constant acceleration
A ball is thrown vertically upward from the ground at 25.2 m/s. The time it takes to reach the highest point is
(a) 5.14 s
(b) 3.57 s
(c) 2.57 s
(d) 1.29 s
Option c – 2.57 s
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