A) 8.1
B) 9.6
C) 1.2
D) 7.2
Correct Answer: B
Solution :
The total distance moved \[s=3.2km\] (due north) The total time taken \[t=20\text{minutes}\] \[=\frac{20}{60}hours=\frac{1}{3}hours\] The velocity of the bicycle \[v=\frac{\text{Total distance covered}}{\text{Total time taken}}=\frac{s}{t}\] \[v=\frac{3.2km}{(1/3)h}=9.6km/h\,\,\,\text{due north}\]You need to login to perform this action.
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