7. A body travels towards north with velocity 2 m/s for 20 s and then moves
towards east with velocity 3 m/s for 10 s. Its average velocity is
a) 2.5 m/s b) 5/3 m/s c) 7/3 m/s d) 50/3 m/s
8.
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Answer:
Total distance= 40m+ 30m
= 70m
Total time= 20s+ 10s
=30s
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