Car 1 is going to run into a stationary car 2 with a velocity of 16.6 m/s. If car 1 has a mass of 16.2 kg and car has a mass of 4.8 kg, what is the final velocity of car 2 if car 1 has a final velocity of 5.6m/s?

One soccer player (a) is moving at 4 km/h when she kicks the ball while another soccer player (b) is moving at 8 km/h. what statement accurately compares their kinetic energy if they have the same mass? a) both soccer players have the same kinetic energy. b) player b has twice the kinetic energy of player a. c) player b has four times the kinetic energy of player a. d) their kinetic energy can't be compared without knowing their mass.