Find time to reach ball. 1D motion

[baird.lindsay]

Homework Statement

basket ball player throws a ball up in the air and the ball travels 3.2meters before stopping. if the basketball player jumps .5 seconds after throwing the ball. what velocity does he need to reach the ball.

Homework Equations

vf^2=v1^2+2as
sf=si+vot+1/2at^2
vf=vi+aot

The Attempt at a Solution

i use vf^2=vo^2+2as to solve for the initial velocity of the ball which i get 7.919 m/s . I solve for the time it takes the ball to reach the max height by using vf=vi+aot and i get .808 seconds. I have no idea had to solve then for the basketball player? Do i use the same method as the ball and if i do; what do i do with the .5 second delay?

 

[tms]

I assume that the point is for the player to reach the the highest point of the ball's trajectory at the same time as the ball does.

You have found how long the ball takes to reach that point, and you are told the delay. The player must reach the same point in the same time, starting after the delay. Use the same method as before to find the player's motion. I don't know what you are supposed to do about the player's height.

It is best to quote the problem exactly instead of paraphrasing, because some vital information might get left out or unintentionally misstated.