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19 February, 20:00

1) Two cars both moving at 27m/s (60mile/hr) pass each other on a road, one moving east the othe other west. 1a) both cars have the same speed (T, F)

1b) both cars have the same velocity (T, F)

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  1. 19 February, 23:36
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    1a) True 1b) False

    Explanation:

    The definition of a car's velocity is the change of displacement between time, from here we can see that this is a vector, this means that it has magnitude and direction.

    The definition of speed is the change of distance between the unit of time, as we see this magnitude is a scalar since distance is a scalar.

    1 a) the car has the same speed, True since the magnitude is a scalar

    1 b) the cars have the same speed. False since the magnitude is a vector, even if it has the same module it has different direction
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