brody2847 brody2847

07-09-2017
Physics

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A 8.40 g bullet has a speed of 1.33 km/s. (a) what is its kinetic energy in joules?

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TheProfessor4zzzFM TheProfessor4zzzFM

07-09-2017

KE = Force (in Newtons) x distance (in meters)
To convert mass and velocity into units of force and distance we need to use the standard kinetic energy equation kE = 1/2m x v^2

= 0.00420kg * 1330^2m/s
= 7429.38 j
= 7430 j

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