50-kg cart is rolling across the floor with an initial speed of 4 m/s toward a glass window which is 5 m away. Unless you push against the cart to help stop the cart will not stop in time to keep from rolling into the window. The coefficient of friction against the cart is 0.15. You step in front of the cart and push against the motion. You will find what force you need to push in order to stop the cart in a distance of 5 m.   what is the net force?  what is the force of friction on the cart?  what is the force of the push?

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter5: Displacement And Force In Two Dimensions
Section: Chapter Questions
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A 50-kg cart is rolling across the floor with an initial speed of 4 m/s toward a glass window which is 5 m away. Unless you push against the cart to help stop the cart will not stop in time to keep from rolling into the window. The coefficient of friction against the cart is 0.15. You step in front of the cart and push against the motion. You will find what force you need to push in order to stop the cart in a distance of 5 m.

 

what is the net force? 
what is the force of friction on the cart? 
what is the force of the push? 

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