Chapter study guide

This chapter takes the variables of position, time, velocity, and acceleration and weaves them together in a mathematical model that describes linear motion. This model is versatile and accurate enough to be used for everything from navigating submarines and spacecraft to moving toy robots and driverless vehicles. The model starts with the graphs of position versus time and velocity versus time. The concept of slope is applied to both graphs to derive two equations that describe position and speed in accelerated motion. These equations are then applied to free fall and other common situations.



By the end of this chapter you should be able to
create and interpret x vs. t graphs for uniformly accelerated motion;
create and interpret v vs. t graphs for uniformly accelerated motion;
solve problems in one-dimensional motion involving position, velocity, time, and constant acceleration;
solve a one-dimensional motion problem with two equations and two unknowns; and
calculate speed and position for bodies in free fall.



4A: Acceleration
4B: A model for accelerated motion



106Acceleration
107Acceleration on motion graphs
108Understanding acceleration
109Positive and negative acceleration and velocity
110Determining acceleration
1114A: Acceleration
112Velocity in accelerated motion
113A model of accelerated motion
1144B: A model for accelerated motion
115Solving accelerated motion problems
116Four equations of motion
117Solving problems with the four equations
118Quadratic equations
119Section 1 review
120Gravity and free fall
121Free fall problems for dropped objects
122Free fall problems for objects thrown upward
123Terminal velocity and variable acceleration
124Section 2 review
125Chapter review
a= Δv Δt
v= v 0 +at
x = x 0 + v 0 t + 1 2 a t 2
x= x 0 + 1 2 ( v 0 +v )t
v 2 = v 0 2 +2a( x x 0 )
 
accelerationquadraticfree fall
terminal velocity

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