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viva [34]
3 years ago
8

In most food chains all of the energy originally comes from

Physics
1 answer:
ch4aika [34]3 years ago
8 0
All of the original energy comes from the sun
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Explanation:

m/s to km/hr => 18/5

15 m/s to km/hr => 15 x 18/5 =>3 x 18 => 54km/hr

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I assume that the ball is stationary (v=0) at point B, so its total energy is just potential energy, and it is equal to 7.35 J. 
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