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 50.0-m 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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