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Question

When a body is projected with velocity u horizontally from a height h.

Column-I Column-II
(a) The speed of body at any time t is (p) 2ghu2
(b) It will strike the ground after time t equal to (q) 2hg
(c) The path followed by the body is expressed as y equal to (r) 12gx2u2
(d) The tangent of the angle θ made by velocity vector striking the ground with horizontal is equal to (s) u2+g2t2

A
a-s, b-p, c-q, d-q
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B
a-s, b-p, c-s, d-p
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C
a-s, b-q, c-r, d-p
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D
a-r, b-p, c-q, d-q
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Solution

The correct option is C a-s, b-q, c-r, d-p
(a)(s); (b)(q); (c)(r); (d)(p)
(a) v = v2x+v2y = u2+(gt)2 = u2+g2t2
(b) at t = T, y = 0
0 = h 12gt2
t = 2hg
(c) y = 12 gx2u2
(d) dydx= gxu2
at t = T(when it strikes the ground)
x = R


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