Initial state: a softball is at rest in the hand of a softball player. final state: shortly after being thrown, the softball is in motion at the highest point along its trajectory. notes: the system includes the ball and earth. air resistance is negligible. the player threw the ball upward at an angle. system: player-ball-earth

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

a=d/t

a="triangle"v/t

explanation:

a = acceleration