Which of the following is NOT a reason why exercise routines should have clearly stated goals? A.
Goals allow for time to be spent more efficiently.
B.
Goals can make sure individuals vary their exercises.
C.
Goals can keep an individual motivated.
D.
Goals allow individuals to track their progress against others.

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?