Two students are pushing identical crates across a frictionless floor. the crates are initially at rest. bing applies a horizontal force of 23 n to his crate. bob, who is shorter than bing, pushes on his crate at an angle of 33° below the horizontal, also with a force of 23 n. find the ratio of the masses of the two crates if bing’s crate is moving at twice the speed of bob’s crate after they have traveled a distance of 33.5 m across the floor?

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.