Mathematics: Abird with a mass of 1.5 kg flies at a rate of 4.0 m/s. what is the kinetic energy of the bird?

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Abird with a mass of 1.5 kg flies at a rate of 4.0

Ответ:

BakerElsie02

14.01.2022

The answer is 12 J.

The kinetic energy (KE) of an object is expressed as the product of half of the mass (m) of the object and the square of its velocity (v²):
$KE = \frac{1}{2} m*v^{2}$

The unit of the kinetic energy is Joules (J = kg · (m/s)²).

It is given:
m = 1.5 kg
v = 4 m/s

It is unknown:
KE = ?

Thus:
$KE = \frac{1}{2} m*v^{2}$
$KE = \frac{1}{2} 1.5kg*(4 m/s)^{2}$
$KE = 0.75kg*16(m/s)^{2}$
$KE = 12 kg*(m/s)^{2}$
KE = 12J

Therefore, the kinetic energy of the bird is 12J.

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Abird with a mass of 1.5 kg flies at a rate of 4.0 m/s. what is the kinetic energy of the bird?

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