Ahockey puck is hit so that it leaves the stick at 50.4m/s. if it takes 0.25 s for the puck to hit the boards, how far is the player standing from the boards? (/2)

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?