Atomic StructureHard
Question
A shell is fired from a cannon with velocity n m/sec at an angle θ 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 m/sec of the other piece immediately after the explosion is
Options
A.3v cosθ
B.2v cosθ
C.
v cos θ
v cos θD.
v cosθ
v cosθSolution
From momentum conservation
mv cos θ = -
Vcosθ + 
V′
V′ = 3Vcos θ
mv cos θ = -
Vcosθ + V′V′ = 3Vcos θ
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