Use newton’s second law to find the initial acceleration of an object with a mass of 42 kg when a force of 6 n is applied. for this problem ignore direction and round to the nearest hundredth.

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.