Question

wo bodies of masses 10 kg and 2 kg are moving with velocities 2i-7j+3k and -10i +35 j-3k m/s respectively.find velocity of center of masses

Answer 1

Answer:

2k

Explanation:

Velocity of centre of mass is given by

V = (m1v1 + m2v2)/(m1 + m2)

= (10(2i - 7j + 3k) + 2(-10i + 35j - 3k))/(10 + 2)

= (20i - 70j + 30k - 20i + 70j - 6k)/12

= 24k / 12

= 2k