Predict which item has the greatest decrease in kinetic energy. assume both planes reach identical velocity.

a) passenger airplane lands at an airport

b) passenger airplane takes off at an airport

c) small private airplane lands at an airport

d) small private airplane takes off at an airport

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.