NEWTON'S LESSON 1 HOMEWORK Free-body diagrams for four situations are shown below. For each situation, determine the net force acting upon the object. Situation A Ffrict 5 N ↑Fnorm =3N Fapp = 5 N Fgray = 3 N Situation C Form= 20 N Fgray 20 N Situation B Ffrict 5 N <=3N norm Fgrav=3 N Situation D Fair 40 N Fgray = 25 N 1. Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose that you visit that place (just suppose) and throw a rock. The rock will do what and why? 2. A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this speed and in this direction? 3. Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a greater speed it will have a greater inertia. Tosh argues that inertia does not depend upon speed, but rather upon mass. Who do you agree with? Explain why.
NEWTON'S LESSON 1 HOMEWORK Free-body diagrams for four situations are shown below. For each situation, determine the net force acting upon the object. Situation A Ffrict 5 N ↑Fnorm =3N Fapp = 5 N Fgray = 3 N Situation C Form= 20 N Fgray 20 N Situation B Ffrict 5 N <=3N norm Fgrav=3 N Situation D Fair 40 N Fgray = 25 N 1. Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose that you visit that place (just suppose) and throw a rock. The rock will do what and why? 2. A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this speed and in this direction? 3. Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a greater speed it will have a greater inertia. Tosh argues that inertia does not depend upon speed, but rather upon mass. Who do you agree with? Explain why.
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 24PE: The wheels of a midsize car exert a force of 2100 N backward on the road to accelerate the car in...
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