Vectors
Exam Prep Study Notes (Things to remember)
Section Summary
Δx=xf−x0, where x0 is the initial position and xf is the final position. In this text, the Greek letter Δ (delta) always means “change in” whatever quantity follows it. The SI unit for displacement is the meter (m). Displacement has a direction as well as a magnitude. Δt=tf−t0, where tf is the final time and t0 is the initial time. The initial time is often taken to be zero, as if measured with a stopwatch; the elapsed time is then just t. Step 1. Examine the situation to determine which physical principles are involved. Step 2. Make a list of what is given or can be inferred from the problem as stated (identify the knowns). Step 3. Identify exactly what needs to be determined in the problem (identify the unknowns). Step 4. Find an equation or set of equations that can help you solve the problem. Step 5. Substitute the knowns along with their units into the appropriate equation, and obtain numerical solutions complete with units. Step 6. Check the answer to see if it is reasonable: Does it make sense? g=9.80 m/s2
1 Displacement
2 Vectors, Scalars, and Coordinate Systems
3 Time, Velocity, and Speed
4 Acceleration
5 Motion Equations for Constant Acceleration in One Dimension
6 Problem-Solving Basics for One Dimensional Kinematics
7 Falling Objects
8 Graphical Analysis of One Dimensional Motion
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