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[تروبيكان]

a car starts from hither, goes 50 km in a straight line to yon, immediately turns around,
and returns to hither. The time for this round trip is 2 hours. The magnitude of the average
velocity of the car for this round trip is:
A. 0
b. 50 km/hr
c. 100 km/hr
d. 200 km/hr
e. Cannot be calculated without knowing the acceleration

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