kaydijune2002 kaydijune2002

07-02-2020
Physics

contestada

Calculate the kinetic energy in joules of a 10 g bullet moving at 300 m/s.
____J

1. 900
2. 450
3. 15
4. 45

Respuesta :

Chelboy Chelboy

07-02-2020

Answer:450joules

Explanation:

Let mass=m velocity =v

Mass given=10g=(10/1000)kg=0.01kg

Velocity given =300m/s

Kinetic energy =(m x v^2)/2

Kinetic energy =(0.01x300^2)/2

Kinetic energy =(0.01 x 90000)/2

Kinetic energy =900/2

Kinetic energy =450joules

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