Oct4
Monday, October 04, 2010
7:59 AM
7. A physics student throws a softball straight up into the air. The ball was in the air for
a total of 3.56s before it was caught at its original position. What was the initial
velocity of the ball and how high did it rise? (17.5 m/s, 15.5m)
8. A small bag is dropped from a hot air balloon 381 m off the ground. What is the
bags displacement and velocity after it has been falling 1.0 s, 2.0, s, 3.0s? How fast is
the bag traveling just before it strikes the ground? (-9.81 m/s, -19.6 m/s, 29.4
m/s, -4.90 m, -19.6 m, -44.1 m and –86.5m/s)
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