PHYS 101

Knight et al., chapter 2

which x vs. t graph described my motion most closely ?

which v vs. t diagram represents the motion diagram above ?

which x vs. t graph represents the v vs. t graph above ?

soccer problem

time for the first problem:

At t = 0s a soccer forward is 15 m from the goal when he hits the ball towards the goal. At t = 0.5s the ball passes the last defender who is 5m in front of the goal. How much time does the goalie have to react?

OK, here’s another one:

Alan leaves Los Angeles at 8:00 AM to drive to San Francisco, 400 mi. away. He travels at a steady 50 mph. Beth leaves Los Angeles at 9:00 AM and drives a steady 60 mph.• who gets to San Francisco first ?• How long does the first to arrive have to wait

for the second ?