What average force is necessary to bring a 45.0-kg sled from rest to a speed of 3.00 m/s in a period of 20.0 s? Assume frictionless ice. Enter a positive answer if the force is in the direction of the sled's final velocity and a negative answer if the force is opposite to the direction of the sled's final velocity.

What average force is necessary to bring a 45.0-kg sled from rest to a speed of 3.00 m/s in a period of 20.0 s? Assume frictionless ice. Enter a positive answer if the force is in the direction of the sled's final velocity and a negative answer if the force is opposite to the direction of the sled's final velocity.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.81P: Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center...

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