I NEED HELP You toss a ball straight up into the air. Assume that air resistance is negligible.

PART A. Draw a free-body diagram for the ball at three points: on the way up, at the top, and on the bottom, and on the way down. Specifically identify the forces and agents acting on the ball.

PART B. What is the ball's velocity at the very top of the motion?

PART C. What is the ball's acceleration at this point?

ill do it for 100, also this isnt 80 its 40

because growing process had stoped after 4-5 year

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

there are no contact forces mentioned on the list of choices that you've provided.