Two objects of masses 2 kg and 3 kg are moving in the same direction with velocities 5 m/s and 2m/s. After collision these objects stick together. What will be the velocity of the combined object after collision ?
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Answer: momentum of object1= 2x5 kgm/s
= 10 kgm/s
momentum of object2= 3x2 kgm/s
= 6 kgm/s
momentumafterclash= 10 kgm/s-6 kgm/s=4 kgm/s
Combined mass= 2kg+3kg=5kg
Velocity= momentum/mass
= 4 kgm/s/5kg
= 0.8 m/s
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