Question

explain first law of motion..........?????​

Answer 1

Answer:

Newton, Isaac; laws of motion

Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Answer 2

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$\normalsize\bf{Newton's \: First \: Law \: of \: Motion :}$

Newton's first law of motion is based on the idea of motion given by Galileo.

☆The First Law of Motion is stated as follows :-

An object remains in a state of rest or of uniform motion in a straight line unless compared to change that state by an applied force (i.e. external force).

This means, all objects resist change in their state.

The state of any object can be changed by applying external forces.

➛The first law of motion is also known as the law of inertia.

➛Galileo suggested that the natural tendency of bodies is to oppose in their state of motion of the state of rest.

Some Examples :-

(i) A person standing in a bus falls backward when the bus is started moving suddenly.

(ii) A person standing in a moving bus falls forward if driver applies brakes suddenly.