3 years ago

Pleaseeeee help!!!!!!!!

Physics

1 answer:

Ainat [17]3 years ago

5 0

I did it last year. I thinks its A

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First we will find the speed of the ball just before it will hit the floor

so in order to find the speed of the cart we will first use energy conservation

$KE_i + PE_i = KE_f + PE_f$

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Given that,

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The average electromagnetic energy density is 3.58 × 10^-12 J/m²

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Explanation:

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hope it helps have a nice day

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