A ball is launched from a spring on the floor with an initial velocity of 32 m/s. it then comes to a stop in 4.3 seconds. Determine the acceleration of the ball.

Iknow the answer is a but i don't know why

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Need ! assume that the variables x and y are directly related. if k = 8, what is the value for each of the following points? be sure and record your data to be used in the following problem. x y k 0.