A 100-kg astronaut is floating in outer space. If the astronaut throws a 2-kilogram wrench at a speed of 10 meters per second, which best describes her velocity?:Less than 10 m/s in the same direction as the wrench b
Greater than 10 m/s in the same direction as the wrench
c
Less than 10 m/s in a direction opposite to the wrench
d
Greater than 10 m/s in a direction opposite to the wrench

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.