Question 2 Two boys, each of mass m, are standing at the back of a flatbed trolley of mass 4m. The
trolley is as at rest on a frictionless horizontal surface.
The boys jump of simultaneously at one end of the trolley with a horizontal velocity of 2m-s
The trolley moves in the opposite direction.
2.1.
Write down the principle of conservation of linear momentum in words.
(2)
(5)
un
2.2.
Calculate the final velocity of the trolley.
2.3.
The two boys jump of the trolley one at a time. How will the velocity of the trolley
compare to that calculated in QUESTION 2.2? Write down only GREATER THAN,
SMALLER THAN or EQUAL TO.
(1)
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