A football player moving southward suddenly turns eastward with the same speed. The force acting on the player while turning is directed:
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Question

A football player moving southward suddenly turns eastward with the same speed. The force acting on the player while turning is directed:

G1 Physics · Accepted Answer

Take east as +x and north as +y. Initial velocity = −v j and final velocity = +v i. Change in velocity = v(i+j), pointing north-east. Since F is parallel to Δv over the turning interval, the force acts north-east. Answer: A.