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A ball is projected at an angle of 30^(@...

A ball is projected at an angle of `30^(@)` above with the horizontal from the top of a tower and strikes the ground in 5s at an angle of `45^(@)` with the horizontal. Find the height of the tower and the speed with which it was projected.

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The correct Answer is:
`u=50(sqrt3+1)m//s, II=125 (2-sqrt3)m`
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ALLEN -KINEMATICS-2D-Exercise (S-1)
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  2. A ball is thrown horizontally from a cliff such that it strikes the gr...

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  3. A Bomber flying upward at an angle of 53^(@) with the vertical release...

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  4. A ball is projected at an angle of 30^(@) above with the horizontal fr...

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  5. A ball is dropped from rest from a tower of height 5m. As a result of ...

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  6. A tank is initially at a perpendicular distance BT=360 m from the plan...

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  8. A ball is projected on smooth inclined plane in direction perpendicula...

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  9. A ball is thrown horizontally from a point O with speed 20 m/s as show...

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  11. On a frictionless horizontal surface , assumed to be the x-y plane ,...

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  15. Rain is falling vertically with a speed of 20ms^(-1)., A person is run...

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  16. A glass wind screen whose inclination with the vertical can be changed...

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  19. Velocity of the boat with respect to river is 10m/s. From point A it i...

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