MShelJajade MShelJajade

09-01-2017
Mathematics

Answered

How fast would a(n) 74 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet fired at 370 m/s?

Verified Answer :

MissPhiladelphia MissPhiladelphia

11-01-2017

Kinetic energy, KE = 0.5 mv^2

Where m is the mass

V is the velcocity

First calculate the kinetic energy of the bullet

Ke = 0.5(0.008 kg) ( 370 m/s)^2

Ke = 547.6 J

547.6 J = 0.5( 74 kg) v^2

V = 3.85 m/s

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