When a swimmer stands on a high diving board, he has 5800J of PE relative to the surface of the water.
What is his PE and KE at each of the following:
a. the instant he steps off the board
b. when he is halfway to the water
c. just before he hits the water

An object has a weight of 500 on earth what is the mass of this object

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) ! : )

What are some important factors to consider when choosing a warm-up before your workout?