Question

a body has mass 15kg is thrown vertically upward with a velocity of 10m/s^2 what is its k.e, what is potential energy at the highest

Answer 1

mass=15kg

velocity=10m/s2

kinetic energy=1/2mv2

1/2 15×10×10

1/2 ×1500

750J

Answer 2

here mass =15 kg

velocity  = 10m/s^2

so by applying the formula of kinetic energy

K.E=1/2mv^2

     =1/2x15x10^2

     =1/2x15x100

     =750J

so our body is thrown to upward so it will be converted into potential energy in up.

so,

   so by applying the formula of potential energy

P.E=mgh

750J=15x9.8xh

750=147xh

750/147=h

5.10m=h

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