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7) Nolan Ryan once threw a 100

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7) Nolan Ryan once threw a 100.9 mile/h fastball. How much time did

the ball take to reach home plate 18.4 m away? (1 mile = 1.61 km)


8. A passenger on a bus walks towards the front of the bus at 3.0 km/h relative to the bus, while the bus travels south at 15 km/h. What is the passenger's velocity relative to the road?


9) NASA's Upper Atmosphere Research Satellite (UARS) fell to Earth back in 2011. NASA stated that it is difficult to predict the satellite's exact path, but they would be able to give a two hour warning before it finally fell. The 6-tonne satellite was traveling at a steady speed of 7.0 km/s. How many kilometers can it travel in 2.0 hours? (Interesting fact: Canada is over 4000 km across.)


10) If the Sun suddenly dies out, the last ray of light would travel 1.5 x 1011 m to Earth with a speed of 3.0 x 108 m/s. How many minutes would elapse between the Sun dying and the inhabitants of Earth seeing things go dark?


11) A jogger takes 3.5 min to run once around a square city block that is 220 m on each side. (a) Draw a sketch of the motion.
(b) Determine the jogger's average speed in m/s.
(c) Determine the jogger's average velocity upon returning to the starting position?


12) In February 2013, a meteorite streaked through the sky over Russia. A fragment broke off and fell downwards towards Earth with a speed of 12 000 km/h. The fragment was first spotted just as it entered our atmosphere at a position of 127 km above Earth. What was its position above Earth 10.0 seconds later?