Superman throws a 0.18kg baseball at a speed of 0.948c. Find the following: (a)

Question

Superman throws a 0.18kg baseball at a speed of 0.948c. Find the following: (a) rest energy (Answer = 1.62E16 J) (b) kinetic energy (c) total energy kinetic energy formula (i thought) was: mc^2 /sqrt(1-(v^2/c^2)) but this does not give the right answer... Superman throws a 0.18kg baseball at a speed of 0.948c. Find the following: (a) rest energy (Answer = 1.62E16 J) (b) kinetic energy (c) total energy kinetic energy formula (i thought) was: mc^2 /sqrt(1-(v^2/c^2)) but this does not give the right answer...

Explanation / Answer

Given :     Mass ( m ) = 0.18 kg       Speed ( v ) = 0.948 c = 0.948* 3 * 108 m/s = 2.844 * 108m/s    Velocity of light ( c ) = 3 * 108m/s a )         Rest Eenergy Eo = mc2                             = ( 0.18 kg ) ( 3 * 108 m/s )                             = ------ J b ) Kinetic energy ( K.E ) = 1/2 m v2                                         = 1/2 ( 0.18 kg ) ( 2.844 * 108 m/s )                                         = ------ J c ) Total energy ( E ) = mc2 / (1-(v2/c2))                                 = ----- J Solve it I hope it helps you                                         = 1/2 ( 0.18 kg ) ( 2.844 * 108 m/s )                                         = ------ J c ) Total energy ( E ) = mc2 / (1-(v2/c2))                                 = ----- J Solve it I hope it helps you

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