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2.Motion in Straight Line
hard
A particle when thrown, moves such that it passes from same height at $2$ and $10s$, the height is
A
$g$
B
$2g$
C
$5g$
D
$10g$
Solution
(d) If ${t_1}$ and ${t_2}$are the time, when body is at the same height then,
$h = \frac{1}{2}g\,{t_1}{t_2}$ $ = \frac{1}{2} \times g \times 2 \times 10 = 10\;g$
Standard 11
Physics