If a person weighs 500 n on earth, what would she weigh on jupiter, where the acceleration due to gravity is 26 m/s2?
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What are atoms of the same element with varying number of neutrons

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

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 •