Question

: A body of mass 400 g was projected at 4 m/s vertically downward from a point 5 m above the ground. Use the work-energy principle to calculate the body's kinetic energy when it was about to hit the ground.​

Answer 1

Answer:

3.2

Explanation:

K energy=1/2m(v)2

1/2*400/1000(4)^2

1/2*0.4*16

8*0.4

3.2

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