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2 years ago

13

A 0.12 kg bird is flying at a constant speed of 7.8 m/s. what is the birds conetic energy?

2 answers:

Contact [7]2 years ago

8 0

Answer:

3.6504 Joules is the birds kinetic energy.

Explanation:

Mass of the bird, m = 0.12 kg

Speed by which bird is flying , v = 7.8 m/s

The kinetic energy of the flying bird is given by :K.E

$K.E.=\frac{1}{2}mv^2$

$K.E.=\frac{1}{2}\times 0.12 kg\times (7.8 m/s)^=3.6504 Joules$

3.6504 Joules is the birds kinetic energy.

lana [24]2 years ago

7 0

KE=1/2mv^2 - equation for kinetic energy
KE=(1/2)(0.12 kg)((7.8 m/s)^2 - plug it into the formula
KE=(0.06 kg)(60.84 m/s) - multiply 1/2 to the mass and square the speed
KE= 3.7 J - answer
Hope this helps

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