qvezne2476 qvezne2476

23-01-2024
Physics

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Two balls A and B, having masses 1 and 2 kg moving with speeds 21 m/s and 4 m/s respectively in opposite directions, collide head-on. What is their final velocity?
a) 0 m/s
b) 7 m/s
c) 11 m/s
d) 15 m/s

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