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BIO World-class sprinters can accelerate out of the
Chapter 7, Problem 21E(choose chapter or problem)
BIO? World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15 m/s2. How much horizontal force must a 55-kg sprinter exert on the starting blocks to produce this acceleration? Which body exerts the force that propels the sprinter: the blocks or the sprinter herself?
Questions & Answers
QUESTION:
BIO? World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15 m/s2. How much horizontal force must a 55-kg sprinter exert on the starting blocks to produce this acceleration? Which body exerts the force that propels the sprinter: the blocks or the sprinter herself?
ANSWER:Solution 21E According to newton’s second law of motion,the net force acting on an object of mass m,produces an acceleratio