Acar goes from point a to point b, five miles away and then returns to point a. the car is going 15 mph. what is the velocity of the car? a.–30 mph b.0 mph c.+15 mph d.+45 mph

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.