Recent content by xterminal01

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    A mass of 1x10^-16 kg is traveling, what is its kinetic energy ?

    Can you show what to input into the calculator to get 1.39J, because that's actually where i am stuck. Thanks
  2. X

    A mass of 1x10^-16 kg is traveling, what is its kinetic energy ?

    Homework Statement A mass of 1x10^-16 kg is traveling at 0.5 c to the nearest hundredth joule what is its kinetic energy? Homework Equations Et=KE + mc^2=Jmc^2 KE=mc^2(J-1) KE=mc^2(1/sqrt(1-v^2/c^2)-1)= The Attempt at a Solution This is where i am stuck putting the whole thing in...
  3. X

    Standing on the top ledge of a 55 meter high ?

    Standing on the top ledge of a 55 meter high building you throw a ball straight up with an initial speed of 29 m/s. How long, to the nearest second, does it take to hit the ground? If the building in the previous question was 56 meters high and you throw the ball at 30 m/s, how high to the...
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