Rocky the Squirrel leaps off of a tree branch with an initial horizontal velocity of 3.4 m/s. He reaches a second branch that is 2.8 meters below where it began. a. How much time does Rocky’s flight take?
b. What is the final vertical velocity of Rocky at the second branch?
c. What is the horizontal displacement of Rocky?

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.

You are doing a science experiment with a fahrenheit thermometer. your data must be in degrees celsius. if you measure a temperature of 125°f, what is this temperature in degrees celsius