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. 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 (Fhet ma, (Fetma, 72 N 68 N 22 m/s Previous Answers v Correct

College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter4: Dynamics: Force And Newton's Laws Of Motion
Section: Chapter Questions
Problem 9PE: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a...
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Part A
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:
(FOnet ma,
(Fylnet ma,
a = (a,? + a,)12
72 N
35
68 N
35
72 N
2.2 m/s?
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)
?
m/s?
Submit
Request Answer
Transcribed Image Text:Part A 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: (FOnet ma, (Fylnet ma, a = (a,? + a,)12 72 N 35 68 N 35 72 N 2.2 m/s? 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) ? m/s? Submit Request Answer
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