A ball is thrown vertically upward it's velocity at the highest point is: a) -10. b) zero
c) 2 m-1 d) non of these

Explanation:

After reaching the highest point the ball will come back to the thrower.

in physics zero. in muscle fatigue could be high

  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.