Question : A particle moves along the sides π΄π΅, π΅πΆ, πΆπ· of a square of side 25 π with a velocity of 15 ππ β1 . Its average velocity is
(A) 10ms^{-1}
(B) 15ms^{-1}
(C) 7.5ms^{-1}
(D) 5ms^{-1}
Answer : option (D)
Solution :
A particle moves along the sides π΄π΅, π΅πΆ, πΆπ· of a square of side 25 π with a velocity of 15 ππ β1 . Its average velocity is
with
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