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Nastasi K.

asked • 10/27/15

Physics Help Please?

(1) A 3.00 kg ball is dropped from rest from the roof of a building 176.4 m high. While the ball is falling, a horizontal wind exerts a constant force of 12.0 N on the ball. How long until the ball hits the ground? Possible Answers:
a) 7.00 s
b) 6.00 s
c) 5.00 s
(2) The numbers of significant figures in 6.30 g and 8.030 * 10^3 m are:
a) 2 and 2
b) 3 and 4
c) 2 and 3
d) 4 and 5
(3) A golfer takes two putts to sink a ball in the hole. The first putt displaces the ball 6.00 m east, and the second putt displaces the ball 5.4 m south. What displacement would put the ball in the hole in one putt?
a) 8.07 m at 48 degrees SE
b) 11.4 m southeast
c) 3.32 m at 42 degrees SE
d) 8.07 m at 42 degrees SE

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