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schepotkina [342]
3 years ago
13

Paul is running with a KE of 600 J if he starts at rest and his final velocity is 4 m/s what is his mass

Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0
We use the kinetic energy equation and substitute our data solving for the mass:
ke = (1/2)mv^2
m = 2*ke/v^2
m = 2*600/4^2
m = 1200/16
m = 75 kg
we can substitute directly because the units are homogeneus in the SI system: J, m/s, kg
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