Students in Ms. Bailey's class were studying speed. Four students rolled balls across the floor a distance of 30 cm. Their times are seen here. Put the times in order from fastest to slowest. A) Ball 1 - Ball 2 - Ball 3 - Ball 4 B) Ball 1 - Ball 2 - Ball 4 - Ball 3 C) Ball 2 - Ball 1 - Ball 4 - Ball 3 D) Ball 4 - Ball 3 - Ball 2 - Ball 1

In the 1980's, congress authorized the u.s. department of energy to build the wipp facility in the chicuahuan desert in new mexico. what is the purpose of wipp?

In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i.e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce