Purpose In this activity, you will investigate the relationship between force an

Question

Purpose In this activity, you will investigate the relationship between force and motion using the "Porces and Motion: Basics" PhET simulation. Apparatus computer (MacBook or equivalent) "Forces and Motion: Basics" PhET simulation software (available at phet.colorado.edu) Procedure PART A. TUG OF WAR The sim should open in the Tug of War tab. If it does not, click theà tab to activate Tug of War. In this sim, a wagon (W) can be pulled by the players of two teams. Both Blue Team and Red Team have four players, one adult (A), a teenager TD, and two children (C). The adult is the largest player, the children are the smallest players. 1. Even Steven If you arrange identical teams in the Tug of War, you'll get a tie. The net force is zero. The following are examples of identical teams. A-W.-A (Adult vs. Adult) C-T--W..C-T A-T-C-CW..C-C-T-A a. Describe three distinct ways to arrange the teams so that you get a tie even though the teams have ferent numbers of players. These are non-identical, balanced teams. (To show distinct arrangements, don't simply switch players on each side. For example, A-CW-T and T..-W.-A- C are not distinct. Nor do they produce a tie.) b. Complete this statement which relates part of Newton's First Law (the Law of Inertia) to these observations: A body will remain torce. unless acted on by a/an

Explanation / Answer

(A) Three distinct ways can be

(a) A---W---C-T

(b) T---W---C-C

(c) A-C---W---C-C-T

(B) A body at rest will remain at rest unless acted on by an external force.

In general it is "A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force"

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