1.

uist starts frown the centre O of a creular park of radhus 1 km, reaches the edge Pthe park, then cycles along the ctrcumference, and returns to the centre along 00s shoen h c 4.2t. tf the round trip takes 10 min, what is the (al net displacement.) avenaue rekeity, annd ld average speed of the cyelistFo. 4.21

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