When people are shot in the movies, the blast often knocks them backwards. Is this realistic? If a 20.0 gram bullet traveling at 950 m/s strikes a 80.0 kg man wearing a safety vest, how fast in meters/second will the man be knocked backwards?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.