Question

1. In an inertial frame of reference, for initial
velocity u, final
velocity v, acceleration a of a body at time t,
which relation
states the Newton's first law of motion?
u = 0
V = 0
a = 0
V = u + at​

Answer 1

Answer:

NEWTON'S LAWS OF MOTION

First law

In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.

Second law

In an inertial frame of reference, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant – see below.)

Third law

When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.

The three laws of motion were first compiled by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687. Newton used them to explain and investigate the motion of many physical objects and systems.For example, in the third volume of the text, Newton showed that these laws of motion, combined with his law of universal gravitation, explained Kepler's laws of planetary motion.

Some also describe a fourth law which states that forces add up like vectors, that is, that forces obey the principle of superposition.

Explanation:

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Answer 2

By an inertial frame of reference:

Explanation:

Newton's first law of motion states that,

An object continues or tends to remain in the state of rest unless an external force applied to it.

so, law concludes as initial and final velocity, acceleration of a certain object is equal to zero.

Note:

• You can also use applied force instead of external force in the main definition.
• it can also be applied for larger inertia, i.e., larger mass.
• The object totally remains in the rest.so, V=0(final velocity) and a=0(acceleration).