Force And Laws Of Motion

Question 1

What is Force?

Answer 1

Force is a vector quantity that is a push or pull acting on a given object.

Question 2

Newton’s first law of motion

Answer 2

An object remains in a state of rest/ uniform motion in a straight line unless compelled to change state and or direction by an applied force

Question 3

Define inertia

Answer 3

It is the natural tendency of an object to resist change in its state of motion/ rest

Question 4

Formula of momentum

Answer 4

p = mv

Question 5

Newton’s second law of motion

Answer 5

The rate of change in momentum of an unbalanced force is proportional to the applied unbalanced force in the direction of the force

Question 6

Define Momentum

Answer 6

A vector quantity of the quantity of motion of a moving body, measured as a product of its mass and velocity

Question 7

Formula for change in momentum

Answer 7

∝p1 - p2
∝mv -mu
∝m(v-u)

Question 8

Formula for rate of change of momentum

Answer 8

∝p1 - p2/ t
∝m(v-u)/ t

Question 9

Formula for applied force

Answer 9

F= ma

Question 10

SI unit of momentum

Answer 10

kg m/s

Question 11

CGS unit of momentum

Answer 11

g cm/s

Question 12

Define a Newton

Answer 12

The force required in an object of mass of 1 kg to produce an acceleration of 1 m/s²

Question 13

Newton’s third law of motion

Answer 13

Every action has an equal and opposite reaction