To give a 19-kg child a ride, two teenagers pull on a 4.2-kg sled with ropes, as indicated in the figure. Both teenagers pull with a force of 72 N at an angle of 35° relative to the forward direction, which is the direction of motion. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 68 N. The magnitude of the acceleration of the sled+child is (enter your answer with two significant figures) possibly useful: (F)net = ma, (F)net = may 72 N 68 N a = (a, + a,12, 12 N 22 m/s Butim Previous Answers v Correct

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 A
lo give a 19-kg child a ride, two teenagers pull on a 4.2-kg sled with ropes, as indicated in the figure. Both teenagers pull with a force of 72 N at an angle of 35° relative to the forward direction, which is the direction of motion. In
addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 68 N. The magnitude of the acceleration of the sled+child is (enter your answer with two significant figures)
possibly useful:
(F)net = max
(Fy)net = may
72 N
35
68 N
a = (a,² + a,31/2 ,
a-
35°
72 N
2.2 m/s?
Submit
Previous Answers
Correct
Part B
If one of the teenagers gets tired and only pulls with a force of 48 N while everything else stays the same, the magnitude of the acceleration of the sled+child is (enter your answer with two significant figures)
ΑΣΦ
2.9
m/s?
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 4 attempts remaining
Transcribed Image Text:Part A lo give a 19-kg child a ride, two teenagers pull on a 4.2-kg sled with ropes, as indicated in the figure. Both teenagers pull with a force of 72 N at an angle of 35° relative to the forward direction, which is the direction of motion. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 68 N. The magnitude of the acceleration of the sled+child is (enter your answer with two significant figures) possibly useful: (F)net = max (Fy)net = may 72 N 35 68 N a = (a,² + a,31/2 , a- 35° 72 N 2.2 m/s? Submit Previous Answers Correct Part B If one of the teenagers gets tired and only pulls with a force of 48 N while everything else stays the same, the magnitude of the acceleration of the sled+child is (enter your answer with two significant figures) ΑΣΦ 2.9 m/s? Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining
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