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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

a)

b)

c)

d)



Question ID - 52100 | SaraNextGen Top Answer

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

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (a) -

(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

127 votes


127