Arock is thrown downward from an unknown height above the ground with an initial speed of 6.1 m/s. it strikes the ground 1.7 s later. determine the initial height of the rock above the ground. the acceleration of gravity is 9.8 m/s 2 . answer in units of m

What challenges did you encounter during the circuit training program?

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)