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Description: An action figure is placed on a toy car, which is initially at rest. Then the action figure moves through 4 time intervals: The car is pushed until it hits a wall. Then, the action figure slides down a ramp. The action figure flies off of the ramp a

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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An action figure is placed on a toy car, which is initially at rest. Then the action figure moves through 4 time intervals: The car is pushed until it hits a wall. Then, the action figure slides down a ramp. The action figure flies off of the ramp and hits a wall at the peak of its trajectory, momentarily coming to a complete stop. Finally, the action figure falls into the toybox and comes to rest. Assume that all surfaces, except the final wall, have nonzero coefficients of static and kinetic friction. For each time interval, including the endpoints, determine whether the total work done on the action figure by gravity (?g), normal forces (?N), and friction (?f) is positive, negative, or zero. Neglect drag. The motion of a toy army guy action figure is shown in four different time intervals. The toy is stiff and has a base for standing upright. During interval 1, shown in the upper left, the army guy stands upright upon a car initially at rest. The car is pushed to the right, with the guy on top, until the car hits a short wall. The wall stops the car, but the action figure's inertia carries it to the right over the wall. During interval 2, the army guy then proceeds to travel down a slide in the upright position. The slide is steep with a sligh upward curve at the end. During interval 3, the toy leaves the slide and travels in the air until it hits a wall at the peak of its trajectory. Hitting the wall brings the toy momentarily to rest. During interval 4, the toy falls into a toy box, which brings the toy to rest. Next to each interval are three bins stacked vertically. The top bin is labeled W subscript G, the middle bin is labeled W subscript N, and the bottom bin is labeled W subscript F.

An action figure is placed on a toy car which is initially at rest. Then the action figure moves through 4 time
intervals: 1) the car is pushed until it hits a wall, 2) then the action figure slides down a ramp, 3) flies off of
the ramp and hits a wall at the peak of its trajectory momentarily coming to a complete stop, and finally
4) falling into the toybox and coming to rest. Assume that all surfaces except the wall have non-zero
coefficients of static and kinetic friction. For each time interval, including the endpoints, determine whether
the total work done on the action figure by gravity (g), normal forces (N), and friction (f) is positive, negative,
or zero. Neglect drag.
v= 0
W. >0
W <0
WN
W. <0
W, >0
f.
и,
v = 0
W. =0
W.
>0
Ws
W, =0
toys v= 0
>0
<0
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