If a compasses moved close to a magnet, the compass will always point?
towards the earths north pole
away from the earths south pole
along the magnets field lines
none of the above

A12-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. the clay sticks to the block. after impact, the block slides 7.5 m before coming to rest. if the coefficient of friction between the block and the surface is 0.65, what was the speed of the clay immediately before the impact?