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Work Done

A stone of ma...

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A stone of mass 20 g falling from height of 2 km hits the ground with a speed of 200 ms–1. The work done by the gravitational force is Options: 100 J 200 J 300J 400J

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Consider a drop of rain water having mass $1 g$ falling from a height of $1 k m$ . It hits the ground with a speed of $50 m / s$ . Take ' $g$ ' constant with a value $10 m / s^{2}$ . The work done by the (i) gravitational force (ii) resistive force of air is

Q. Consider a rain drop of mass

1 g

falling from a height of

2 km

. It hits the ground with a speed of

50 m/s

. The work done by resistive force of air is

(g = 10 {m/s}^{2})

Q. A raindrop of mass

1 g

falling from a height of

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hits the ground with a speed of

50 m s^{- 1}

. If the resistive force is proportional to the speed of the drop, then the work done by the resistive force is (Take

g = 10 m s^{- 2})

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Q. A liquid drop of

1.00 g

falls from a height of a cliff

1.00 k m

. It hits the ground with a speed of

50 m s^{- 1}

.what is the work done by the unknown resistive force.

Q. A rain drop of mass

1 g

falling from a height of

1 km

hits the ground with a speed of

50 m/s

. If a resistive force acts on the drop, then the work done by the resistive force is (Take

g : 10 {m/s}^{2})

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