1. If a biker rides west for 50 miles from his starting position, then turns and bikes back east 80 miles. What is his net displacement?
2. If a space shuttle orbits Earth once, what is the shuttle's distance traveled and displacement?
3. Four bicyclists travel different distances and times along a straight path. Which cyclist traveled
with the greatest average speed?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

Rohit is trying to tune an instrument

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n