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Impulse
11) A shopping cart with a mass of 2 kilograms
accelerates in a straight line from 4 meters per
second to 8 meters per second due to the application
of a force whose duration is 0.5 seconds. What is the
magnitude of this average force?

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.