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What is the sign of the accelerations of the cart (in the x direction) the instant it reaches its turn around point at the maximum height?

What is the sign of the accelerations of the cart (in the x direction) the instant it reaches its turn around point at the maximum height?

College Physics
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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What is the sign of the accelerations of the cart (in the x direction) the instant it reaches its turn around point at the maximum height?

a. Positive 

b. Negative 

c. Zero

Questions: The first 2 questions are about the following situation: Suppose that a low-friction cart is placed on a tilted track (see picture below). The cart is given an initial shove up the incline, in the positive x-direction. The cart is observed to slow down, reach a maximum height, and then turn around and speed up back down the incline. Treat the cart as a point object, with its position measured at its center. Note that this diagram is a sketch and the tilt of the ramp is exaggerated. +X turn around point x=4m v₁ = 5 m/s X=0 16
Transcribed Image Text:Questions: The first 2 questions are about the following situation: Suppose that a low-friction cart is placed on a tilted track (see picture below). The cart is given an initial shove up the incline, in the positive x-direction. The cart is observed to slow down, reach a maximum height, and then turn around and speed up back down the incline. Treat the cart as a point object, with its position measured at its center. Note that this diagram is a sketch and the tilt of the ramp is exaggerated. +X turn around point x=4m v₁ = 5 m/s X=0 16
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