Which car has the most kinetic energy ?? A. a car mass 1400 kg with speed 4 m/s
B. a car mass 1300 kg with speed 3 m/s
C. a car mass 1500 kg with speed 5 m/s
D. a car mass 1200 kg with speed 2 m/s

Explain the consequences of this addiction to the brain tissue

The substances that are necessary for producing of certain hormones and that store and transport vitamins

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?