And now here are the next questions. Courtesy of University Physics
1) You normally drive on the freeway between
San Diego and Los Angeles at an average speed of 105 km>h
65 mi>h, and the trip takes 2 h and 20 min. On a Friday afternoon, however, heavy traffic slows you down and you drive the
same distance at an average speed of only 70 km>h 43 mi>h.
How much longer does the trip take?
2) The fastest measured pitched baseball left
the pitcher’s hand at a speed of 45.0 m>s. If the pitcher was in
contact with the ball over a distance of 1.50 m and produced constant acceleration, (a) what acceleration did he give the ball, and
(b) how much time did it take him to pitch it?
3) You throw a glob of putty straight up toward the ceiling,
which is 3.60 m above the point where the putty leaves your hand.
The initial speed of the putty as it leaves your hand is 9.50 m>s.
(a) What is the speed of the putty just before it strikes the ceiling?
(b) How much time from when it leaves your hand does it take the
putty to reach the ceiling?
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