Flashcards for JEE Physics - Laws of Motion Class 11

 Page 1


Laws of Motion
Flash cards
Page 2


Laws of Motion
Flash cards
Newton’s first law of motion
According to this law, every body continues in its state of rest 
or motion in a straight line unless it is compelled by external 
force to change that state.
(i) This law is also called law of inertia. Inertia is a property 
by virtue of which a body opposes the change in the state of 
rest or motion.
(ii) Force is such a factor, which is essential for change in 
translatory motion of a body.
(iii) The first law of motion defines the force.
Page 3


Laws of Motion
Flash cards
Newton’s first law of motion
According to this law, every body continues in its state of rest 
or motion in a straight line unless it is compelled by external 
force to change that state.
(i) This law is also called law of inertia. Inertia is a property 
by virtue of which a body opposes the change in the state of 
rest or motion.
(ii) Force is such a factor, which is essential for change in 
translatory motion of a body.
(iii) The first law of motion defines the force.
Examples of law of inertia
(a) To remove the dust particles from a cloth by shaking it
(b) Banking of the passengers (towards the motion of bus), 
sitting in a bus on applying the sudden brakes.
Page 4


Laws of Motion
Flash cards
Newton’s first law of motion
According to this law, every body continues in its state of rest 
or motion in a straight line unless it is compelled by external 
force to change that state.
(i) This law is also called law of inertia. Inertia is a property 
by virtue of which a body opposes the change in the state of 
rest or motion.
(ii) Force is such a factor, which is essential for change in 
translatory motion of a body.
(iii) The first law of motion defines the force.
Examples of law of inertia
(a) To remove the dust particles from a cloth by shaking it
(b) Banking of the passengers (towards the motion of bus), 
sitting in a bus on applying the sudden brakes.
Newton’s second law of motion
According to this law, the rate of change of momentum 
(mass × velocity) of a body is proportional to the impressed 
force and it takes place in the direction of the force.
Page 5


Laws of Motion
Flash cards
Newton’s first law of motion
According to this law, every body continues in its state of rest 
or motion in a straight line unless it is compelled by external 
force to change that state.
(i) This law is also called law of inertia. Inertia is a property 
by virtue of which a body opposes the change in the state of 
rest or motion.
(ii) Force is such a factor, which is essential for change in 
translatory motion of a body.
(iii) The first law of motion defines the force.
Examples of law of inertia
(a) To remove the dust particles from a cloth by shaking it
(b) Banking of the passengers (towards the motion of bus), 
sitting in a bus on applying the sudden brakes.
Newton’s second law of motion
According to this law, the rate of change of momentum 
(mass × velocity) of a body is proportional to the impressed 
force and it takes place in the direction of the force.
Mathematical form of Newton’s second law
Mathematically
(Defining force in such a way that k =1)
(if mass is constant)
In scalar form, F = ma