You are going to toss a rock straight up into the air by placing it on the palm of your hand(you are not gripping it) then pushing your hand up very rapidly. Draw a free body a diagram for the rock for each situation, and write the sum of equation based on the free body diagram.

B. as your hand is moving up but before the rock leaves your hand.
Would the there be force up?
Fx= 0
Fy= n(normal force)-Mg (mass gravity)

C. Just as the rock leaves your hand
Fy= Mg
Force up???

B. As your hand is moving up but before the rock leaves your hand:

At this moment, the rock is still in contact with your hand. Therefore, there will be a normal force (n) acting on the rock, which is the force exerted by your hand to support the weight of the rock. Additionally, the force of gravity (Mg) acting downwards will also be present.

The free body diagram for the rock in this situation would include:

- An arrow pointing upward representing the normal force (n).
- An arrow pointing downward representing the force of gravity (Mg).

The sum of the forces equation based on the free body diagram would be:

Fx = 0 (since there are no horizontal forces acting on the rock)
Fy = n - Mg (where n is the normal force and Mg is the force of gravity)

C. Just as the rock leaves your hand:

At this moment, the rock is no longer in contact with your hand. Therefore, the normal force (n) becomes zero as there is no longer any contact force supporting the weight of the rock. However, the force of gravity (Mg) still acts downward on the rock.

The free body diagram for the rock in this situation would include:

- An arrow pointing downward representing the force of gravity (Mg).

The sum of the forces equation based on the free body diagram would be:

Fx = 0 (since there are no horizontal forces acting on the rock)
Fy = -Mg (where Mg is the force of gravity)

Note: It is important to clarify that in reality, as the hand pushes the rock upwards, there will be additional forces acting on the rock due to air resistance. However, in the context of a basic analysis, considering the forces mentioned above will suffice.