Physics > 2008 > 13
WASSCE
An object of mass 2kg moving with a velocity of 3ms-1 collides head-on with another object of mass 1kg moving in the opposite direction with a velocity 4ms-1. If the objects stick together after collision, calculate their common speed.
A.
0.60ms-1
B.
0.67ms-1
C.
2.00ms-1
D.
3.33ms-1
Answer: B
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