A girl weighing 50 kg makes a high jump of 1.2 m.What is her kinetic energy at the highest point? $(g = 10 m s^{- 2}$ )

6000 J

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600 J

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60 J

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Zero

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Solution

The correct option is C Zero
Given,
mass of girl $M = 50 k g h = 1.2 m$
A girl is jumping vertically upward, when it will reach at maximum Hight its velocity will become zero
ie $v_{f} = 0$
$K . E = \frac{1}{2} m v^{2} = \frac{1}{2} m \times 0 = 0$
Option D

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A girl weighing 50 kg makes a high jump of 1.2 m.What is her kinetic energy at the highest point? (g=10ms−2)

The correct option is C ZeroGiven,mass of girl M=50 kgh=1.2 mA girl is jumping vertically upward, when it will reach at maximum Hight its velocity will become zeroie vf=0K.E=12mv2=12m×0=0Option D

A girl weighing 50 kg makes a high jump of 1.2 m.What is her kinetic energy at the highest point? $(g = 10 m s^{- 2}$ )

The correct option is C Zero
Given,
mass of girl $M = 50 k g h = 1.2 m$
A girl is jumping vertically upward, when it will reach at maximum Hight its velocity will become zero
ie $v_{f} = 0$
$K . E = \frac{1}{2} m v^{2} = \frac{1}{2} m \times 0 = 0$
Option D