A 63.6 kg runner has a speed of 4.50 m/s at one instant during a long-distance event. HINT (a) What is the runner's kinetic energy at this instant (in J)? (b) How much net work (in J) is required to double his speed?

A 63.6 kg runner has a speed of 4.50 m/s at one instant during a long-distance event. HINT (a) What is the runner's kinetic energy at this instant (in J)? (b) How much net work (in J) is required to double his speed?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 8.19P: A boy in a wheelchair (total mass 47.0 kg) has speed 1.40 m/s at the crest of a slope 2.60 m high...

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Question

A 63.6 kg runner has a speed of 4.50 m/s at one instant during a long-distance event.
HINT
(a) What is the runner's kinetic energy at this instant (in J)?
(b) How much net work (in J) is required to double his speed?

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