All bearings are made by lebng spherical drops of molten metal fall inside a tall tower – called a shot tower – and solidify as they fall a height h. the bearings are released from rest. a)draw the problem. b)if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? (lc) c)what is the bearing’s impact velocity? (lc)

Part b)

h = 78.5 m

Part c)

v = 39.24 m/s

Explanation:

Part b)

If ball need t = 0 to t = 4 s then height of the tower is the total displacement of the ball in t = 4 s interval

here if ball start from rest

then its displacement is given as

Part c)

Speed of the bearing at the end of the motion of the ball

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.