Question

A stone is thrown vertically upward with velocity 40ms-2 at what heightits k.e.and p.e. will equal

Answer 1

Answer:

KE = PE

1/2 mv² = mgh

1/2 v² = gh

v² = 2gh

40² = 2×10×h

1600 = 20 h

1600/20 = h

80 = h

Height = 80 m

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