Laws of Motion
Physics ⇒ Mechanics
Laws of Motion starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Laws of Motion.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
Define inertia.
Describe the concept of equilibrium in the context of forces.
Describe the relationship between mass and acceleration for a given force.
Explain the difference between static friction and kinetic friction.
A 10 kg object is at rest. What is the net force required to accelerate it to 2 m/s²?
A 2 kg object is dropped from rest. What is the force acting on it due to gravity? (Take g = 9.8 m/s²)
A 3 kg object is moving with a velocity of 6 m/s. If a force of 9 N acts in the direction of motion for 2 seconds, what will be its final velocity?
A 4 kg object is moving at 5 m/s. If a force of 8 N acts opposite to its motion, how long will it take to come to rest?
Which law explains why passengers lurch forward when a car suddenly stops?
(1) Newton's First Law
(2) Newton's Second Law
(3) Newton's Third Law
(4) Law of Universal Gravitation
Which of the following best describes Newton's Second Law of Motion?
(1) For every action, there is an equal and opposite reaction
(2) An object remains at rest unless acted upon by a force
(3) The rate of change of momentum of an object is proportional to the applied force
(4) The force of gravity acts on all objects
Which of the following is an example of Newton's Third Law of Motion?
(1) A book resting on a table
(2) A rocket launching into space
(3) A car accelerating on a highway
(4) A ball rolling down a hill
Which of the following is NOT a consequence of Newton's Third Law?
(1) Recoil of a gun
(2) Walking
(3) A ball at rest
(4) Swimming
Fill in the blank: According to Newton's Second Law, force equals mass times _______.
Fill in the blank: The force that opposes the relative motion between two surfaces in contact is called _______.
Fill in the blank: The reaction force is always equal in _______ and opposite in direction to the action force.
Fill in the blank: The SI unit of force is the _______.
True or False: Action and reaction forces always act on the same object.
True or False: The acceleration of an object is always in the direction of the net force acting on it.
True or False: The mass of an object affects its inertia.
True or False: The net force acting on an object is zero if the object is moving at a constant velocity.
