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Assignment 2 Problems(Fall Term Physics 102)
57.
A ball is thrown upward from the ground with an initial
speed of 25 m/s; at the same instant, a ball is dropped from
a building 15 m high. After how long will the balls be at the
same height?
T = 0.6 s
62.
A mountain climber stands at the top of a 50.0m cliff
that overhangs a calm pool of water. He throws two stones
vertically downward 1.00 s apart and observes that they
cause a single splash. The first stone has an initial velocity
of –2.00 m/s. (a) How long after release of the first stone
will the two stones hit the water? (b) What initial velocity
must the second stone have if they are to hit
simultaneously? (c) What will the velocity of each stone be
at the instant they hit the water?
T = 3.0 s, V=15.2 m/s, V=34.8 m/s ,31.4 m/s
4.
A jogger runs 100 m due west, then changes direction for
the second leg of the run. At the end of the run, she is 175
m away from the starting point at an angle of 15.0° north of
west. What were the direction and length of her second
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 Fall '08
 VANDENBERG
 Physics

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