How does Newton's third law explain how a rocket is launched upward? A. The force of Earth's gravity balances with the force of the rocket engines. B. The mass of the rocket determines how much force is needed to move it into orbit. C. The rocket will remain motionless on the launchpad until an unbalanced force is applied. D. The force it exerts on its exhaust gases is equal to the force the exhaust gases exert on the rocket.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?