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elixir [45]
2 years ago
9

Define mechanics and describe its three major divisions

Physics
1 answer:
Andrew [12]2 years ago
4 0

<u>Mechanics</u> is the branch of physics which deals with the study of motion of material objects.

<u><em>Divisions</em></u>

There are three major division of mechanics

Statics

Kinematics

Dynamics.

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The kinetic energy of a body of mass 15 kg is 30 joule. What is its momentum?
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This problem is a piece o' cake, IF you know the formulas for both kinetic energy and momentum.  So here they are:

Kinetic energy = (1/2) · (mass) · (speed²)

Momentum = (mass) · (speed)

So, now ... We know that

==> mass = 15 kg,  and

==> kinetic energy = 30 Joules

Take those pieces of info and pluggum into the formula for kinetic energy:

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30 Joules = (1/2) · (15 kg) · (speed²)

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Momentum = (15 kg) · (2 m/s)

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