In a 4.0-kilometer race, a runner completes the first kilometer in 5.9 minutes, the second kilometer in 6.2 minutes, the third kilometer in 6.3 minutes, and the final kilometer in 6.0 minutes. the average speed of the runner for the race is approximately a) 0.16 km/min b) 0.33 km/minc) 12 km/min d) 24 km/min
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Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy
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Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide? kg • what must the total momentum of the system be after the train cars collide? kg •
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In a 4.0-kilometer race, a runner completes the first kilometer in 5.9 minutes, the second kilometer...
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