Question

good morning
here is a question

two objects of masses 2 kg and 5 kg with velocities 2m/s and 5m/s respectively collide with each other to form a single object. calculate it's velocity

plz answer it fast​

Answer 1

By law of conservation of momentum m1u1 + m2u2 = m1v1 + m2v2

As after collision two objects have became one so velocity will also be one m1u1+ m2u2 = (m1 + m2) v

(2)(2)+(5)(5) = ( 5+2) v

4 + 25 =7v

29/7 = v

4.14m/s = v

Hence ; the velocity of the object is 4.14 m/s.

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Answer 2

Explanation:

$by \: law \: of \: conservation \: of \: mass \: v = 1.14mpersec$