When a hot object is placed in a water bath whose temperature is 25◦c, it cools from 100 to 50◦c in 150 s. in another bath, the same cooling occurs in 120 s. find the temperature of the second bath.

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)