An object of mass 40 kg moving along a straight line with a horizontal – McqOptions

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1.	An object of mass 40 kg moving along a straight line with a horizontal velocity of 15 ms-1 collides and sticks to a stationary wooden block of mass 10 kg. If the surface is smooth, the combined object (object and the wooden block) after collision moves along the same straight line with a velocity of:
A.	9 ms-1
B.	10 ms-1
C.	12 ms-1
D.	12.5 ms-1
Answer» D. 12.5 ms-1

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