PHYSICS [1 Mark Question Answer]

SI unit of weight is Newton (N) . The amount of force acting on a body, when earths pulls a mass 100 g is equals to one Newton.

Weight is the force with which the earth pulls a body towards its center. The weight of a body is not a constant quantity, but depends upon the acceleration due to gravity acting on the body.

Mass is the amount of matter contained in the body. It is a constant quantity for a given substance. The mass is found by using a beam balance or a physical balance.
The SI unit of mass is kilogram (Kg).

Correct Statement:Milligram is a sub-multiple of kilogram.

Correct Statement:A freely falling stone has uniform velocity.

Correct Statement:When a body covers equal distances in equal intervals of time in a specified direction, it is said to be moving with uniform speed.

Correct Statement:When a body covers unequal distances in equal interval of time, it is said to be moving with variable velocity.

Correct Statement:Distance covered by a body in unit time in a specified direction is called its velocity.