A) 5.5/sec
B) 4.4/sec
C) 3.3/sec
D) 2.2/sec
Correct Answer: B
Solution :
[b] Radius of the wheel \[=\left[ \frac{1}{2}(50)+10 \right]\] cm =35 cm Distance travelled in one round \[=2\times \frac{22}{7}\times 35\,\,cm\] \[\therefore \] Distance travelled in five seconds =10 rounds \[10\times 2\times \frac{22}{7}\times 35cm=22m\] Speed of the bicycle \[=\frac{22}{7}\] m/sec = 4.4 m / sec.You need to login to perform this action.
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