A stone is thrown straight upward and it rises to a maximum height of 20 m. Determine with what speed was it thrown?

20 m/s hope this helps ! :) well that what I rounded to technically its 19.81 m/s.

Explanation:

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.