CBSE Class 11-science Answered
Asked by Sangeeta Mandal | 07 Apr, 2014, 11:47: PM
Expert Answer
1) Horizontal range is directly proportional to the square of the speed. If the speed of A is doubled, horizontal range will increase 4 times. Hence the new ratio of horizontal range will be 12 : 1.
2) Let at any instant, the particle is at P and velocity is y.
Then,
ux = u cos θ uy = u sin θ
ax = 0 ay = -g
and,
yx = ux + axt yy = ux + axt
yx = u cos θ yy = u sin θ - gt
The velocity of projectile,
Answered by | 09 Apr, 2014, 06:19: PM
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