Aperson has 2 hamburgers and 5 sodas which is 1555 calories. another person has 3 hamburgers and 2 sodas which is 1216 calories. how many calories is the hamburgers and how many calories is the sodas?

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).