:I The collision between a hammer and a nail can he considered to be approximately elastic, Calculate the kinetic energy acquired by a T.2-g nail when it is struck by a 45-g hammer moving with an initial speed of 3.3 mt's. 1A baseball hat balances when placed on a fulcrum in the position shown in the gure below. Is the mass of the bat to the left of the llcrurn greater than, less than, or equal to the mass of the hat to the right of the fulcrum? Explain. j J You are holding a shopping basket at the grocery store with two .2-kg cartons of cereal at. the left end of the basket. The basket. is lll m long. Where should you place a 1.9-kg half gallon ofrnilk, relative to the left end of the basket, so that the center of mass of your groceries is at the center of the basket?I Object A has a mass to, object B has a mass 2m, and object C has a mass mall Rank these objects in order of increasing kinetic energy, given that they all have the same momentum. Indicate ties where appropriate