reeceslife7432 reeceslife7432

09-04-2024
Physics

contestada

A machine which is 70% efficient raises a 10kg body though a certain distance and spends 100J energy. The body is then released. On reaching the ground, the kinetic energy of the body will be
A) 0 J
B) 70 J
C) 50 J
D) 35 J

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