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A 4.5 kg box slides down a 4.5-m -high frictionless hill, starting from rest, across a 1.8-m -wide horizontal surface, then hits a horizontal spring with spring constant 550 N/m . The other end of the spring is anchored against a wall. The ground under the spring is frictionless, but the 1.8-m- long horizontal surface is rough. The coefficient of kinetic friction of the box on this surface is 0.24.

A 4.5 kg box slides down a 4.5-m -high frictionless hill, starting from rest, across a 1.8-m -wide horizontal surface, then hits a horizontal spring with spring constant 550 N/m . The other end of the spring is anchored against a wall. The ground under the spring is frictionless, but the 1.8-m- long horizontal surface is rough. The coefficient of kinetic friction of the box on this surface is 0.24.

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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Part C and D, please. Thank you!

A 4.5 kg box slides down a 4.5-m -high frictionless hill, starting from rest, across a 1.8-m -wide horizontal surface, then hits a horizontal spring with spring constant 550 N/m . The other end of the spring is anchored against a wall. The ground under the spring is frictionless, but the 1.8-m- long horizontal surface is rough. The coefficient of kinetic friction of the box on this surface is 0.24. Submit Previous Answers Correct Part B What is the speed of the box just before hitting the spring? Express your answer to two significant figures and include the appropriate units. v2 = 8.9 m Submit Previous Answers v Correct Part C How far is the spring compressed? Express your answer to two significant figures and include the appropriate units. HẢ ? Ax = 0,77 m Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Review your calculations and make sure you round to 2 significant figures in the last step. Part D Including the first crossing, how many complete trips will the box make across the rough surface before coming to rest? ? N = Submit Request Answer
Transcribed Image Text:A 4.5 kg box slides down a 4.5-m -high frictionless hill, starting from rest, across a 1.8-m -wide horizontal surface, then hits a horizontal spring with spring constant 550 N/m . The other end of the spring is anchored against a wall. The ground under the spring is frictionless, but the 1.8-m- long horizontal surface is rough. The coefficient of kinetic friction of the box on this surface is 0.24. Submit Previous Answers Correct Part B What is the speed of the box just before hitting the spring? Express your answer to two significant figures and include the appropriate units. v2 = 8.9 m Submit Previous Answers v Correct Part C How far is the spring compressed? Express your answer to two significant figures and include the appropriate units. HẢ ? Ax = 0,77 m Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Review your calculations and make sure you round to 2 significant figures in the last step. Part D Including the first crossing, how many complete trips will the box make across the rough surface before coming to rest? ? N = Submit Request Answer
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