## How can I find the initial case of kinetic energy

Question

How can I find the initial case of kinetic energy

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6 months 2021-08-07T12:59:09+00:00 1 Answers 4 views 0

1. INITIAL CASE OF KINETIC ENERGY CAN BE FOUND BY

(KE)INITIAL = (KE)FINAL – F*D*COS (ALPHA)

Explanation:

The object in stationary position when comes to motion due to some force is called energy.

The kinetic energy of an object depends on its velocity. To change its velocity, one must exert a force on it. It turns out there’s a connection between the force one applies to an object and the resulting change in its kinetic energy.

The equation to find kinetic energy, KE, is the following, where m is mass and v is velocity:

K.E = 1/2 * m * v

KE(final) – KE(initial)  =  (force) (distance)

KE(final) – KE(initial)  =  Work done on object

Another way to write this is with vectors F for force and d for displacement. Then

KE(final) – KE(initial)  =   F  (dot product)  d

=   F * d * cos(alpha)

where alpha is the angle between vector F and vector d.