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Dafna1 [17]
3 years ago
7

A dog mass with 14 kg has a kinetic energy of 135.5 J.What is the speed of the dog?

Physics
2 answers:
Gnesinka [82]3 years ago
4 0

Answer:

The speed of the dog is 4.39 m/s.

Explanation:

Given that,

Mass of the dog, m = 14 kg

Kinetic energy of the dog, E = 135.5 J

To find :

The speed of the dog

Solve :

The energy possessed by an object due to its motion is called ts kinetic energy. Its formula is given by :

E=\dfrac{1}{2}mv^2

v=\sqrt{\dfrac{2E}{m}}

v=\sqrt{\dfrac{2\times 135.5\ J}{14\ kg}}

v = 4.39 m/s

Therefore, the speed of the dog is 4.39 m/s.

Fantom [35]3 years ago
3 0
Your answer is 4.4 m/s :D
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