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If two buildings are 30m m apart then with what speed a ball must be thrown from a window which is at a height of 150 m above the ground so that it teaches a window which is at a height of 27.5 m above the ground

If two buildings are 30m m apart then with what speed a ball must be thrown from a window which is at a height of 150 m above the ground so that it teaches a window which is at a height of 27.5 m above the ground

Grade:11

1 Answers

Vikas TU
14149 Points
7 years ago
let the ball was thrown at angle a with horizontal then,
in x – direcn,
30 = u*t........................(1)
in y – direcn.,
150 – 27.5 = 122.5 = ut – 0.5gt^2.....................(2)
solve these 2 eqns. and get the values of u and t respectively.

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