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If an 800 kg roller coaster is at the top of its 50 m high trackit will have a potential energy pf 392,000 J and a kinetic energy of J. This means the total mechanical energy is 392, 000J the cart drops down to where its kinetic energy is now 392,000 Jhow high off the ground is the cart now?

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Respuesta :

Answer: 0 m

Explanation: PEi + KEi = PEf + KEf

Since PEi equals 392,000 and KEi equals 0 at 50m high, the total energy is 392,000.

392,000 = 392,000 + PEf

PEf = 0

Since PEf is 0J, h is also zero

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