Neglecting air resistance and using free-fall acceleration (-9.8 m/s^2), calculate the velocity of the ball when it hits the ground

Based on this activity, is kinetic energy always transformed into potential energy?

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.