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A ball is thrown upwards . Its height va...

A ball is thrown upwards . Its height varies with time as shown in figure. If the acceleration due to gravity is `7.5 m//s^(2)`, then the height h is

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The correct Answer is:
C
For returning, the starting point
Area of `(DeltaOAB)=` Area of `(DeltaBCD)`
`1/2xx20xx25=1/2xxtxx4trArr t=5sqrt(5)cong11.2`
`:.` Required time `=25+11.2=36.2`
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ALLEN -MOTION IN A PALNE-EXERCISE-02
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  2. Three different objects of masses m(1) , m(2) and m(2) are allowed to ...

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  3. A ball is thrown upwards . Its height varies with time as shown in fig...

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  6. If a ball is thrown vertically upwards with speed u, the distance cove...

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  7. A man throws balls with the same speed vertically upwards one after th...

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  10. Which of the following equation represents the motion of a body moving...

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  11. The variation of velocity of a particle moving along a straight line i...

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  12. Find the integration of the 1/(2x+1).

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  15. A particle moves in straight line in same direction for 20 seconds wit...

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  17. An object travels 10km at a speed of 100 m/s and another 10km at 50 m/...

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  18. A body starting from rest moves along a straight line with a constant ...

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  19. Acceleration-time graph of a body is shown. The corresponding velocity...

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  20. Velocity-time curve for a body projected vertically upwards is with ti...

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