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A ball of mass 50 g is dropped from a height of 20 m. A boy on the ground hits the ball vertically upwards with a bat with an average force of 200 N, so that it attains a vertical height of 45 m. The time for which the ball remains in contact with the bat is [Take `g=10 m//s^(2)`]

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The correct Answer is:
`0.12s`
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AAKASH SERIES-LAWS OF MOTION-NUMERICAL EXERCISE ( LEVEL-1)
  1. Due to the application of a force on a body of mass 100 kg that is ini...

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  2. A force is applied for a duration of 10sec on a body of mass 5kg that ...

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  3. A vehicle of mass 120kg is moving with a velocity of 90kmph What force...

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  4. A ball of mass 0.2 kg moves with a velocity of 20 m s^(-1) and stops i...

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  5. A force acts for 0.1 s on a body of mass 2 kg initially at rest. The f...

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  6. A ball of mass 50 g is dropped from a height of 20 m. A boy on the gro...

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  7. An elevator weighing 6000 kg is pulled upwards by a cable with an acce...

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  8. A 2kg block lying on smooth table which is connected by a body of mass...

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  9. A man wants to draw a bucket full of water in two different ways. As s...

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  10. The pulley arrangements in the figure (A) and (B) are identical. The m...

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  11. Three equal weights of mass m each are hanging on a string passing ove...

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  12. System is shown in the figure. Velocity of sphere A is 9 (m)/(s). Find...

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  13. A light rope fixed at one end of a wooden clamp on the ground passes o...

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  14. Figure represents a painter in a crate which hangs alongside a buildin...

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  15. Two block of masses m and 2m are kept on a smooth inclined plane and t...

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  16. A lift is going up. The total mass of the lift and the passengers is 1...

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