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Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of3.0N starting from rest.
(a) What is the kinetic energy of the sack after Sam has pushed it a distance of10cm?
J
(b) What is the speed of the sack after Sam has pushed it a distance of10cm?
m/s
The centers of a 15kg lead ball and a 50g lead ball are separated by 10cm, What is the ratio of this gravitational force to the weight of the 50g ball
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