That speed is (1m / 0.003sec) = 333 and 1/3 meters per sec .
The medium is not necessarily, but <u>could</u> be, air at sea-level pressure.
We're so good here on Brainly, we can answer it
even WITHOUT seeing the choices.
Time = (displacement) / (magnitude of average velocity) .
It will be unaffected by the magnet because it has no magnetic field. If you were to maybe have electricity going through it is the only way it would have anything to do with the magnet.
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It doubles
Momentum= mass * velocity
when velocity doubles
momentum= 2*(velocity* mass)
In the case of work (and also energy), the standard metric unit is the Joule (abbreviated J). One Joule is equivalent to one Newton of force causing a displacement of one meter. In other words, The Joule is the unit of work (if that helped any!)