7. Two particles of equal mass m have respective initial velocities u1=3i+4j and u2=5i and they collide and stick after the collision. Find the loss in kinetic energy of the FIRST particle (All values are in Sl units).
A) 5m Joules
B) 2.5m Joules
C) 3m Joules
D) 2m Joules
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Answer:
A) 5m Joules
B) 2.5m Joules
C) 3m Joules
D) 2m Joules
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