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2 years ago

A 600 kg car is at rest, and then accelerates to 5 m/s.

Physics

1 answer:

Crank2 years ago

3 0

Answer:

7500J

Explanation:

Given parameters:

Mass of car = 600kg

Velocity = 5m/s

Unknown:

Original kinetic energy = ?

Final kinetic energy = ?

Work used = ?

Solution:

The kinetic energy of a body is the energy due to the motion of a body.

It can be solve mathematically using expression below;

K.E = $\frac{1}{2}$ m v²

where m is mass

v is velocity

original kinetic energy;

The car started at rest and v = 0, therefore K.E = 0

Final kinetic energy;

K.E = $\frac{1}{2}$ x 600 x 5² = 7500J

Work done:

Work done = Final K.E - Initial K.E = 7500 - 0 = 7500J

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