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The maximum height attained by a ball pr...

The maximum height attained by a ball projected with speed ` 20 ms^(-1)` at an angle `45^(@)` with the horizontal is [take g = ` 10 ms^(-2)`]

A

40 m

B

20 m

C

10 m

D

30 m

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The correct Answer is:
C
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AAKASH INSTITUTE-MOTION IN A PLANE-Assignement section -A Objective (one option is correct)
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  2. A projectille covers a horizontal distance of 6 m, when it reaches 10 ...

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  3. An arrow shots from a bow with velocity v at an angle theta with the ...

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  4. The maximum height attained by a ball projected with speed 20 ms^(-1)...

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  5. The time of fight of an object projected with speed 20 ms^(-1) at an...

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  6. The range of a projectile, when launched at an angle of 15^(@) with...

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  7. A food packed is dropped, from a height of 500 m, from a plane flying ...

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  8. The objects x and y are projected from a point with same velocities , ...

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  9. At the topmost point of its path, a projectile has acceleration of mag...

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  10. At what angle of elevation , should a projectile be projected with vel...

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  11. Angular speed of a uniformly circulating body with time period T is

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  12. An object moving in a circular path at constant speed has constant

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  13. Speed of an object moving in cirular path of radius 10 m with angular ...

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  14. A body performing uniform cicular motion completed 140 revolution in a...

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  15. Centripetal acceleration of a cyclist completing 7 rounds in a minute ...

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  16. The velociies of A and B are vecv(A)= 2hati + 4hatj and vecv(B) = 3hat...

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  17. A man can swin with speed 6 km/h in still water. If he tries of swim a...

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  18. A bus appears to go with a speed of 25 km/hr to a car driver, driving ...

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  19. If the angle between two vectors vecA and vecB " is " 90^(@) then

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  20. If the frequency of an object in unifrom circular motion is doubled, i...

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