the cars in a soapbox derby have no engines; they simply coast downhill. which of the following design criteria is best from a competitive point of view? the car's wheels should a. b. have large moments of inertia be massive c. be hoop-like wheels rather than solid disks have small moments of inertia 5. a mouse is initially at rest on a horizontal turntable mounted on a frictionless, vertical axle. as the mouse begins to walk clockwise around the perimeter, which of the following statements must be true of the turntable? it also turns clockwise it turns counterclockwise with the same angular velocity as the mouse it remains stationary it turns counterclockwise because angular momentum is conserved a. d.

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.