[Solved] For An Object Falling Freely Under The Influence Of Gravity,

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CONCEPT:

The kinetic energy of an object is defined as the energy that it possesses due to its motion
And can be expressed as \(K.E = \frac{1}{2}\;m{v^2}\)
In physics, the potential energy of an object can be defined as the energy held by an object because of its position relative to other objects
And it is expressed as P.E = mgh

RRB JE ME 61 15Q EMech2 Hindi Diag(Madhu) images Q7a

Mass of particle = m

Gravitational acceleration = g

Height from which particle is falling = h

The velocity of particle = v

Potential energy = P.E

Kinetic energy = K.E

EXPLANATION:

According to the given condition, if a particle is moving freely it means that it will have some velocity at any given instant
Hence kinetic energy of such particles will always be positive. Which means among all the given options ‘4’ is the most suitable.

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