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

Physics
WAEC 2005
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
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Correct Answer: Option A
Explanation
\(M_1V_1 + M_2U_2 = V(M_1 + M_2)\)

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

V = \(\frac{50}{11} = 4.55\)m/s
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