Common Final 161

# Common Final 161 - Name(printed Fall 2009 Physics 161...

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Final exam Name ___________________________________________ Section_____________Page 2 of 9 Multiple choice questions (5 points each) Just the answer counts for these; no partial credit. 1). You’re pushing a cart to get it moving. The cart starts from rest ( v = 0 ), and for a while you push it so that it moves to the right in a straight line with a steadily increasing speed: Every second, the speed of the cart goes up by 1 km/hour. Assuming friction is small enough to ignore, which of these could be a graph of the force you exert on the cart? (Write your answer in the box to the left.) 2). The clumsy professor rolls a heavy ball and a light ball along a table but doesn’t manage to stop them before they roll off. One ball weighs twice as much as the other; the lighter ball happens to roll at twice the speed. Each hits the floor at some horizontal distance from the table —how do those distances compare? (Write your answer in the box to the right.) A. The heavier ball will hit at about a fourth the distance from the table as the lighter ball. B.
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Common Final 161 - Name(printed Fall 2009 Physics 161...

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