*11 A2.0 kg particie moves along an x axis, being propelled by avariable force directed along that axis. Its position is given by x =3.0 m + (4.0 m/s)t + ct²- (2.0 m/s*)t, with x in meters and t inseconds. The factor c is a constant. At / 3.0 s, the force on the par-ticle has a magnitude of 36 N and is in the negative direction of theaxis. What is c?

Answered: Image /qna-images/answer/44b8c319-90ae-4c75-b188-086b25141955.jpg

Answered: *11 A2.0 kg particie moves along an x…

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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A parachutist whose mass is 65 kg drops from a helicopter hovering 2500 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b, = 30 N-sec/m when the chute is closed and b, = 100 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 15 m/sec, after how many seconds will the parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/ sec2. .. The parachutist will reach the ground after seconds. (Round to two decimal places as needed.)
A parachutist whose mass is 65 kg drops from a helicopter hovering 2500 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b, = 30 N-sec/m when the chute is closed and b, = 100 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 15 m/sec, after how many seconds will the parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/ sec The parachutist will reach the ground after seconds. (Round to two decimal places as needed.)

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