1000 Jd) 1001 J14- The vertical displacement which covered by a projected object upwaravelocity (vi) when returning to the point of projection another time equals:a)b) gv2,Vi292v?d)Second: Answer the following questions:1- Calculate the work done when displacing an object, a distance of 20m if the value ofcausing force for displacement is 50N and work on the same direction of displacement.-A train starting its motion from rest with uniform acceleration 0.5m/s2 for a time intervalof value 20s.calculate the distance moved by a train during this interval.A car of mass 600kg. moves with uniform velocity of value 35m/s.Calculate the momentum which the car possess at this velocity.(a )

Part (14):Given: The initial velocity of the object in the vertical direction is vi. The…

Answered: d) 1001 J velocity (vi) when returning…

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d) 1001 J velocity (vi) when returning to the point of projection another time equals: vi2 a) b) gv2,

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 61PE: Integrated Concepts A 75.0-kg cross-country skier is climbing a 3.0° slope at a constant speed of...

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A bungee cord is essentially a very long rubber band that can stretch up to four times its unstretched length. However, its spring constant vanes over its stretch [see Menz, P.G. “The Physics of Bungee Jumping.” The Physics Teacher (November 1993) 31: 483-487]. Take the length of the cord to be along the direction and define the stretch as the length of the cord minus its un-stretched length that is, (see below). Suppose a particular bungee cord has a spring constant, for of and for. (Recall that the of (Recall that the spring constant is the slope of the force versus its stretch (a) What is the tension in the cord when the stretch is 16.7 m (the maximum desired for a given jump)? (b) How much work must be done against the elastic force of the bungee cord to stretch It 16.7 m? Figure 7.16 (credit modification of work by Graeme Churchard)