Eddie tosses his phone up to his friends window, which is 4 m above the ground. what energy conversion takes place with respect to the phone?
a kinetic energy to elastic potential energy
b elastic potential energy to kinetic energy
c gravitational potential energy to kinetic energy
d kinetic energy to gravitational potential energy

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )