During sprinting, the propulsive impulse lasts 2 times longer than the breaking impulse. The breaking impulse lasts 0.08 seconds. As a result of the breaking impulse the vertical velocity decreases by 2.5 m/s. During propulsion the 65 kg individual is trying to increase their their vertical velocity by 2.7 m/s. What are the horizontal velocities just before contact with the ground during breaking and the the horizontal velocity after the foot leaves the ground at the end of the propulsion phase if the coefficient of friction between the shoe and the track is 0.5?

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To solve this problem we can use the principle of impulse and momentum Given Breaking impulse durati... View the full answer