How long does it take for an airplane to change its velocity from 140 m/s to 180 m/s if its acceleration is 4.0 m/s?? How far does it travel during this time? (10. s, 1600 m)
Proof please

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) ! : )