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A body of mass 5kg moving with a velocity of 10ms-1

A body of mass 5kg moving with a velocity of 10ms-1 collides with a stationary body of mass 6kg. If the two bodies stick together and move in the same direction after their collision, calculate their common velocity

A.

4.55ms-1

B.

12.00ms-1

C.

30.00ms-1

D.

50.00ms-1

Correct answer is A

M1V1+M2U2=V(M1+M2)

5 x 10 + 6 x 0 = V(5 + 6)

V = 5011=4.55m/s