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Physics 21 Online
OpenStudy (lisa2345):

A toy train has a mass of 2 kg and travels at a rate of 1.5 m/s. How much kinetic energy does it have when it's in motion?

OpenStudy (anonymous):

\[KE = \frac{ 1 }{ 2 }mv ^{2}\]

OpenStudy (lisa2345):

Not any of my answers english plz ? lol @burton11ato

OpenStudy (lisa2345):

is it 1.33 j ?

OpenStudy (anonymous):

2.25 J is what I'm getting.

OpenStudy (anonymous):

What i posted originally is the equation you should use. m is the mass, v is the velocity (which you square). The units come out to [kg][m^2]/[s^2] which convert to Joules

OpenStudy (lisa2345):

ohhhhh ok thank you .

OpenStudy (anonymous):

anytime, good luck :)

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