A body starts from rest and travels ‘s’ m in 2nd second, than acceleration is. 1) 2s m / s2 2) 3 s m / s2 3) 23 s m / s2 4) 32 s m / s2

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) ! : )