Q19Long answer
In Fig. 8.2 there are two snakes of the same size slithering on sand. Can you identify which of them would move faster and why? Fig. 8.2
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A snake forms loops in its body while slithering. Each loop of the snake gives it a forward push by pressing against the ground. The snake with a large number of loops moves much faster than the snake with less number of loops. Thus snake “A” will move faster than snake “B”. 124 E XEMPLAR PROBLEMS