An astronaut on the moon places a package on a scale and finds its weight to be 87 N. What would the weight of the package be on the earth?

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Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?