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JEE (Main) Physics - Laws of Motion Multiple Choice Questions (MCQs)

JEE (Main) Physics - Laws of Motion MCQs

JEE (Main) Physics - Laws of Motion Multiple Choice Questions (MCQs)

Which of the following is the correct statement of Newton's First Law of Motion?
a) Force is required to keep a body in motion
b) A body will remain at rest or in uniform motion unless acted upon by an external force
c) The rate of change of momentum is proportional to the force
d) The change in velocity of a body is proportional to the time taken
Answer: b) A body will remain at rest or in uniform motion unless acted upon by an external force
The quantity of motion possessed by an object is called:
a) Speed
b) Velocity
c) Momentum
d) Impulse
Answer: c) Momentum
A body of mass 5 kg is moving with a velocity of 2 m/s. What is its momentum?
a) 2 kg·m/s
b) 5 kg·m/s
c) 10 kg·m/s
d) 7 kg·m/s
Answer: c) 10 kg·m/s
If an object moves in a circular path with uniform speed, the force acting on it is called:
a) Centripetal force
b) Gravitational force
c) Frictional force
d) Normal force
Answer: a) Centripetal force
According to Newton's second law of motion, the force acting on an object is equal to:
a) The product of its mass and acceleration
b) The product of its mass and velocity
c) The product of its mass and displacement
d) The ratio of its acceleration and velocity
Answer: a) The product of its mass and acceleration
An object of mass 10 kg is acted upon by a force of 20 N. What will be its acceleration?
a) 1 m/s²
b) 2 m/s²
c) 5 m/s²
d) 20 m/s²
Answer: b) 2 m/s²
The impulse experienced by an object is defined as:
a) Change in velocity
b) Change in momentum
c) Product of mass and velocity
d) Force applied per unit time
Answer: b) Change in momentum
A force of 50 N acts on an object for 10 seconds. What is the impulse imparted to the object?
a) 500 N·s
b) 50 N·s
c) 5 N·s
d) 10 N·s
Answer: a) 500 N·s
A stone of mass 1 kg is thrown vertically upward with a velocity of 10 m/s. What is the impulse imparted to the stone?
a) 10 N·s
b) 1 N·s
c) 100 N·s
d) 5 N·s
Answer: a) 10 N·s
Newton’s third law of motion states that:
a) For every action, there is an equal and opposite reaction
b) Force is proportional to acceleration
c) The rate of change of momentum is equal to the applied force
d) An object will remain at rest unless acted upon by an external force
Answer: a) For every action, there is an equal and opposite reaction
A 2 kg object is moving with a velocity of 3 m/s. What is the force required to stop it in 2 seconds?
a) 3 N
b) 6 N
c) 9 N
d) 12 N
Answer: b) 6 N
Which of the following is an example of Newton's third law of motion?
a) A rocket propelling itself forward
b) A car speeding up
c) A person pushing a wall
d) An object moving at constant speed
Answer: a) A rocket propelling itself forward
If the mass of an object is doubled, the force required to accelerate it at a constant rate will:
a) Remain the same
b) Double
c) Become half
d) Increase four times
Answer: b) Double
The momentum of an object is always conserved:
a) In elastic collisions only
b) In inelastic collisions only
c) In all collisions, whether elastic or inelastic
d) Only when the object is at rest
Answer: c) In all collisions, whether elastic or inelastic
The force that opposes the motion of an object is called:
a) Gravitational force
b) Normal force
c) Frictional force
d) Tension force
Answer: c) Frictional force

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JEE (Main) Physics - Laws of Motion Multiple Choice Questions (MCQs)

JEE (Main) Physics - Laws of Motion Multiple Choice Questions (MCQs)

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