1). A student drives the 100 mi trip back to campus after spring break and travels with an average speed of 61 mi/h for 1hour and 30 minutes.
a). what distance was traveled during this time?
b). Traffic get heavier, and the last part of the trip take sanother half-hour. What was the average speed during this leg of the trip?
c). Find the average speed for total trip.
2). A student drops an object out the window of the top floorof a high-rise dormitory.
a). Neglecting air resistance, how fast is the object traveling when its strikes the ground at the end of 3.9 s? First used standard British units and then expess the speed in mi/h for a familiar comparison.
Can things dropped from high places be dangerous to people below?
b). How far, in meters, does the object fall during the 3.9s? Comment on how many floors the dormitory probably has. (Assume that there are 32 floors/100m).