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CBSE Class 11-science Answered

A spaceship of speed Vo travelling along +y axis suddenly shots out one fourth of its part with speed 2Vo along +x axis. xy axes are fixed with respect to the ground. What is the velocity of the remaining part?
Asked by | 11 Dec, 2011, 08:39: PM
Expert Answer
say, vel of remaining part: x at an angle  ? with horizontal.
 now equate, the x comp of momentum and y comp of momentum before and after  explosion.
mom coservation:
mv0=3/4 mx sin? + 0      y comp of mom
0=3/4 mx cos?+m/4 2v0
 
x sin ?=4v0/3
x cos?=-2v0/3
x=2?5 v0/3
Answered by | 12 Dec, 2011, 11:32: AM
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