imagine a flat, lightweight wheeled cart that's low to the ground and has well-oiled bearings. what would happen if you approached the cart, stepped onto it, and walked along its length at a constant speed? it would
a) remain nearly stationary
b) advance along with you
c) move rapidly in the opposite direction
d) move forward then backward
e) none of the above

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  1. what do you think? Consider Newtons laws of motion.

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  2. would it be c?

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