A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes the ground a horizontal
distance of 160 ft from the base of the building 5.0 s after being thrown. Assume
that the ground is level and that the side of the building is vertical. Determine the
speed with which the rock was thrown.

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.

What is a good example of instantaneous speed

In what direction does an applied force move an object