Question

A vehicle of mass 100kg has a kinetic energy of 5000 J at an instant. The velocity at that instant is


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Answer 1

Answer:

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Step-by-step explanation:

Answer 2

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Given,

•Kinetic energy possessed by the vehicle at an instant K.E point = 5000 J

To find

Velocity of the vehicle at the instant v=???

Extra Information

In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

so,K.E=½mv²

Where,

K.E=kinetic energy possessed by the body.

M=Mass of the body.

V=Velocity of the body.

Solution,,

=K.E=½mv²

=5000=½×100×v²

=5000=50×v²

=5000/50=v²

=100=v²

=√100=v

=10=v

=v=10m/s m

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