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Chapter 1: Q37E (page 61)
A juggler throws a bowling pin straight up with an initial
speed of 8.20 m/s. How much time elapses until the bowling pin
returns to the juggler鈥檚 hand?
The total time elapsed by the bowling pin is 1.67 s.
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Express each approximation of 蟺 to six significant figures: (a) 22/7 and (b) 355/113. (c) Are these approximations accurate to that precision?
A Honda Civic travels in a straight line along a road. The car鈥檚 distance x from a stop sign is given as a function of time t by the equation where role="math" localid="1655226337795" androle="math" localid="1655226362269" . Calculate the average velocity of the car for each time interval: (a) t = 0 to t = 2.00 s; (b) t = 0 to t = 4.00 s; (c) t = 2.00 s to t = 4.00 s.
How many gallons of gasoline are used in the United States in one day? Assume that there are two cars for every three people, that each car is driven an average of 10,000 miles per year, and that the average car gets 20 miles per gallon.
At what distance above the surface of the earth is the acceleration due to the earth鈥檚 gravity 0.980 m/s2 if the acceleration due to gravity at the surface has magnitude 9.8 m/s2?
A small rock is thrown vertically upward with a speed of22.0 m/s from the edge of the roof of a 30.0-m-tall building. Therock doesn鈥檛 hit the building on its way back down and lands onthe street below. Ignore air resistance. (a) What is the speed of therock just before it hits the street? (b) How much time elapses fromwhen the rock is thrown until it hits the street?
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