Help me with this question plss!! :)

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Give an example for each of the following situations: 1) negative acceleration, but positive velocity 2) positive acceleration and positive velocity 3) positive acceleration, but negative velocity 4) negative acceleration and negative velocity 5) positive velocity and no acceleration

Gproblem 1.3 find the power supply voltage vdd which results in a minimum clock period equals to 500ps. what is the maximum dynamic power dissipation for the inverter driving the load could given this new vdd and the sizes you found in problem 1.1