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olga_2 [115]
3 years ago
12

A 5.0-kgkg rabbit and a 12-kgkg Irish setter have the same kinetic energy. If the setter is running at speed 3.7 m/sm/s, how fas

t is the rabbit running
Physics
1 answer:
mart [117]3 years ago
3 0

Answer:

The speed of rabbit is 5.73 m/s.

Explanation:

Given that,

Mass of rabbit = 5.0 kg

Mass of Irish setter = 12 kg

Speed of setter = 3.7 m/s

Both have the same kinetic energy.

We need to calculate the speed of rabbit

Using formula of kinetic energy

\dfrac{1}{2}m_{r}v^2=\dfrac{1}{2}m_{setter}v^2

Put the value into the formula

\dfrac{1}{2}\times5.0\times v^2=\dfrac{1}{2}\times12\times(3.7)^2

82.14=\dfrac{1}{2}\times5.0\times v^2

v^2=\dfrac{2\times82.14}{5.0}

v=\sqrt{\dfrac{2\times82.14}{5.0}}

v=5.73\ m/s

Hence, The speed of rabbit is 5.73 m/s.

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