15 5-A child releases a balloon at a park. The balloon travels up into the air 9 m, and east across the park a distance
of 20 m, before getting stuck in a tree. What is the resultant displacement of the balloon? Express your answer in
components, and then determine the magnitude.
ANSWER
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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) ! : )