Graph of position versus time with position on y axis from 0 to 80 miles and time on x axis from 0 to 5 hours. segment 1 goes from 0, 0 to 1, 40. segment 2 goes from 1, 40 to 2, 40. segment 3 goes from 2, 40 to 3, 60. segment 4 goes from 3, 60 to 4, 75. segment 5 goes from 4, 75 to 5, 75.

study the graph shown. it is a graphic of a car trip taken by karen and her mother. the starting position (0,0) is their home.

calculate the average speed of the car during the first hour of the trip: 1 miles/hour, 5 miles/hour, 40 miles/hour or 25 miles/hour? show your work.

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

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?

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.