Respected Sir /Mam
This question is from previous year and not from above mentioned topics.
Q. A body of mass m moving with a velocity v in the x- direction collides with another body of mass M moving in the y-direction with a velocity V. They form one body during collision. The direction of the momentum of the composite body with x- axis is
A) tan inverse 1 (mV/Mv)
B)tan inverse 1 ( MV/mv)
C) tan inverse 1 (M/M+m)
D) tan innverse 1 ( M+m/M)
Asked by Kb Aulakh | 27th Apr, 2015, 11:32: PM
Consider that a body of mass 'm' moving with velocity 'v' along x- axis collides with body of mass 'M' moving with velocity 'V' along y axis as shown in the figure below.
Let v' be the velocity of the composite body with x axis.
Conservation of x component of momentum can be written as:
mv = (m+V) v' cos θ -------------(1)
Conservation of y component of momentum can be written as:
MV = (m+V) v' sin θ -------------(2)
Dividing (2) by (1) we get that:
Answered by Jyothi Nair | 28th Apr, 2015, 10:45: AM
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