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FrozenT [24]
3 years ago
5

julie is cycling at a speed of 3.4 meters/second. if the combined mass if the bicycle and julies is 30 kilograms. what is the ki

netic energy
Physics
1 answer:
puteri [66]3 years ago
3 0
You can solve this using the equation k=mv^2. k is the kinetic energy, m is the mass, and is the velocity. k=30(3.4)^2, so the answer is 346.8 J. 
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To solve the problem it is necessary to apply conservation of the moment and conservation of energy.

By conservation of the moment we know that

MV=mv

Where

M=Heavier mass

V = Velocity of heavier mass

m = lighter mass

v = velocity of lighter mass

That equation in function of the velocity of heavier mass is

V = \frac{mv}{M}

Also we have that m/M = 1/7 times

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\mu = \frac{1}{98}v^2

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Deleting constants,

s= \frac{(98*5.1)}{2}

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3 years ago
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