ha2608ma0312 ha2608ma0312

29-11-2021
Physics

contestada

Mary has a mass of 40 kg and sprints at 1 m/s. How much kinetic energy does she have?

¼
She has a kinetic energy of 20 J.

Roberto has twice the mass his sister Mary has (see above) but runs at the same velocity as Mary.

Will his kinetic energy be twice as much? Show your work.

Respuesta :

misszoebygrace misszoebygrace

29-11-2021

KE= 1/2m.v squared

1/280x1 squared = 40J

Yes his kinetic energy will be doubled :)

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