n case.
2.
(A) Derive the equation of motion, s = ut + 1/2 at”. By Graphical method.
(B) If a ball is gently dropped from a height of 20m , if its relative velocity increases uniformly at
the rate of 10 metre per second. With what velocity will it strike the ground.
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Answer:
distance travelled=area of OABC
=area of rectangle OADC+ area of triangleABD
(1) area of rectangle OADC=OA*OC
= u*t
=ut
(2) area of triangle ABD=1/2*area of rectangle AEBD
=1/2*AD*BD
=1/2*t*at
=1/2at^2
s=area of rectangle OADC+Area of triangleABD
s=ut+1/2at^2
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