Select all that apply. The spectrum of Star B is compared to a reference hydrogen spectrum. What can be concluded about Star B? Star B is moving away from Earth. Star B is moving toward Earth. Star B may have transverse motion. Star B has no radial motion.

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.