Analysis of Running Question: Compare the relative sizes of the braking impulse and propulsive impulse in the slow run and the fast run. Is this what you expect? What do unequal impulses tell you about the motion of the participant? Question: In each activity, what was the velocity of the participant’s centre of mass at touchdown and at take-off? Analysis of Long Jumping Question: How did the duration of ground contact vary with run-up speed? Explain this result. Question: Comment on the size of the horizontal propulsive impulse relative to the horizontal braking impulse. Is this what you expect? What would seem desirable? Is there any benefit in generating a negative horizontal impulse during a long jump take-off? (See the Discussion section in ‘Take-off forces and impulses in the long jump’ by N.P. Linthorne et al.) Question: Explain the benefit of producing vertical impulse in long jumping. Question: Compare the relative sizes of the braking impulse and propulsive impulse in the two jumps. Is this what you expect? What do unequal impulses tell you about the motion of the participant?
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