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Kinetic Enegry
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Kinetic Energy
Work out the kinetic energy if a 625 kg rollercoaster car that is moving at a speed of 20 m/s.
Kinetic energy = 1/2 x Mass x Speed squared
Kinetic energy = 0.5 x 625 x 20 squared
=0.5 x 625 x 400
=125000
Gemma had a kinetic energy of 12000 prior to hitting the water if Gemma's mass is 40 kg what is her speed?
Kinetic energy = 1/2 x Mass x Speed squared
= 12000/0.5 x 40 squared
= 12000/0.5 x 1600
=38400000
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