There are two types of electric charges; positive and negative
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|Momentum| = (mass) x (speed)
225 kg-m/s =(50kg) x (speed)
Divide each side by (50kg): Speed=(225 kg-m/s) / (50 kg) = 4.5 m/s .
Regarding the velocity, nothing can be said other than the speed, because
we have no information regarding the direction of the object's motion.
Less than or equal to the magnitude of the vector
The motorist travels (a) 58 km/h and (b) ~16.1 m/sec
