4. A skateboarder goes down a ramp and is measured to have Kinetic Energy of 250 J. If the skater was moving with a velocity of 6.9 m/s what is the mass of the skater?
a.
m= ??
b. V= 6.9 (lol)
C. KE= 250 J

need help calculating mass

What produces a record of seismic waves? richter scale seismogram barometer seismograph

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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)