Notice chinge in foet enieation when taking off and lan dingHopping is an eficient method of locomotion for the kangaroo (see the figure above). When the kangaroo is in the air, the Earth-kangaroo system has a combination of gravitational potential energy and kinetic energy. Whenthe kangaroo lands, its Achilles tendons and the attached muscles stretch-a form of elastic potential energy. This elastic potential energy is used along with additional muscle tensionfor the next hop. In the red kangaroo, more than 50% of the total energy used during each hop is recovered elastic potential energy. This is so efficient that the kangaroo's metabolic rate actually decreases slightly as itshopping speed increases from B km/h to 25 km/hThe horizontal and vertical force components exerted by a firm surface on a kangaroo's feet while it hops are shown in the figure below. The vertical force Ns on Kg varies: when the kangaroo is not touching the surface S,the force is zero; when it is pushing off, the force is about three times the gravitational force that Earth exerts on the kangaroo. The surface exerts a backward horizontal force ( Fs on K) on the kangaroo's foot while itlands and a forward horizontal force as it pushes off for the next hop, similar to what happens to a human foot when landing in front of the body and when pushing off for another step when behind the bodylaunch the kangaroo off the ground(b)Nek1500i takingN100002 0.4300020.4S00Part AWhich answer below is closest to the vertical impulse that the ground exerts on the kangaroo while it takes off? Reading Passage Problem 7.91the force is zero; when it is pushing off, the force is about three times the gravitational force that Earth exerts on the kangaroo. The surface exerts a backward horizontal force (Fs an K :) on the kolands and a forward horizontal force as it pushes of for the next hop, similar to what happens to a human foot when landing in front of the body and when pushing off for another step when behindFrA(a)Part AWhich answer belaw is ciosest te the verticalimpulseat theE 150 Ns9150 Ns0+50 N.s

Answered: Which answer belaw is ciosest to…

Which answer belaw is ciosest to the:verticalmpuise that the groliid exeitiintkaloe stle mkas oft O s0N 00 150 Ns 150 N-s

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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