A shell is fired from a cannon with velocity at an angle with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed in of the other piece immediately after the explosion is |
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a) |
b) |
c) |
d) |
A shell is fired from a cannon with velocity at an angle with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed in of the other piece immediately after the explosion is |
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a) |
b) |
c) |
d) |
(a)
Shell is fired with velocity at an angle with the horizontal
So its velocity at the highest point
= horizontal component of velocity
So momentum of shell before explosion
When it breaks into two equal pieces one piece retraces its path to the canon, then other part moves with velocity
So momentum of two pieces after explosion
By the law of conservation of momentum