Mottu drove a car 80 km due west at 40km/h and then 60km due South 30 km/h. Determine the magnitude of the average velocity for the whole journey?
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Answer:
Let the total time be =T distance travelled in T/2=[80×
2
T
]m
Distance travelled in another T/2=[40×
2
T
]m
Total distance =40T+20T=60T
Total time =T
V
Avg
=60
T
T
=60Km/h
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