Laws of Motion
Physics ⇒ Mechanics
Laws of Motion starts at 8 and continues till grade 12.
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See sample questions for grade 9
A ball is thrown upwards. What is the direction of the net force acting on it while it is rising?
A person kicks a football and it moves forward. Which law of motion is demonstrated here?
Define inertia.
Explain why a person wearing a seatbelt is safer during a car accident.
If a moving object comes to rest, what can you say about the net force acting on it?
A car of mass 1000 kg increases its velocity from 10 m/s to 20 m/s in 5 seconds. Calculate the force applied.
A person kicks a football and it moves forward. Which law of motion is demonstrated here?
Explain why a person wearing a seatbelt is safer during a car accident.
If the net force acting on an object is zero, the object will:
(1) Accelerate
(2) Remain at rest or move with constant velocity
(3) Change direction
(4) Increase in mass
Which of the following best describes momentum?
(1) Mass × Acceleration
(2) Mass × Velocity
(3) Force × Distance
(4) Mass × Force
Which of the following is a non-contact force?
(1) Friction
(2) Tension
(3) Gravitational force
(4) Normal force
Which of the following is an example of inertia of direction?
(1) A passenger moving forward when a bus stops suddenly
(2) A stone tied to a string moving in a circle flies off tangentially when the string breaks
(3) A book lying on a table remains at rest
(4) A ball rolling on the ground comes to rest
Fill in the blank: The acceleration produced in a body is ________ proportional to the mass of the body.
The rate of change of momentum is equal to ________.
The SI unit of force is ________.
The tendency of a moving object to continue moving in a straight line at constant speed is due to its ________.
Is friction a contact force?
Is it possible for an object to be in motion if the net force acting on it is zero?
Is it true that mass and weight are the same physical quantity?
Is the following statement true or false? 'Friction always acts in the direction of motion.'
