Arace car makes one lap around a track of radius 50 m in 9.0 s. 1) what is the average velocity? m/s 2) what was the car’s centripetal acceleration? m/s2. a) 277 b) 0.18 c) 34.9450 d) 42.2 e) 18.65.56 f) 24.4

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) ! : )