A5.08 g object moving to the right at 28.5 cm/s makes an elastic head-on collision with a 10.16 g object that is initially at rest. 28.5 cm/s 5.08 g 10.16 g find the velocity of the first object immediately after the collision. the acceleration of gravity is 9.8 m/s 2 . answer in units of cm/s.

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) ! : )