If a hockey puck is shot across frictionless ice from half court at 35 m/s, how long does it take to reach the opponent’s goal if the court is 55 meters from goal to goal? 0.78 seconds

1.56 seconds

2.34 seconds

4.68 seconds

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) ! : )