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Displacement is an example of a vector quantity, which is a quantity that has both a direction and a magnitude. We explore vecto ...

16 CHAPTER 2 MOTION ALONG A STRAIGHT LINE Figure 2-4Calculation of the average velocity between t1s andt4 s as the slope of th ...

2-1 POSITION, DISPLACEMENT, AND AVERAGE VELOCITY 17 Calculation:Here we find (Answer) To find vavggraphically, first we graph th ...

18 CHAPTER 2 MOTION ALONG A STRAIGHT LINE Instantaneous Velocity and Speed You have now seen two ways to describe how fast somet ...

2-2 INSTANTANEOUS VELOCITY AND SPEED 19 Figure 2-6(a) The x(t) curve for an elevator cab that moves upward along an xaxis. (b)Th ...

Acceleration When a particle’s velocity changes, the particle is said to undergo acceleration(or to accelerate). For motion alon ...

curve has a positive derivative (the slope is positive), which means that a(t) is positive. When the cab slows to a stop, the de ...

whether an object’s speed is increasing or decreasing. For example, if a car with an initial velocity v25 m/s is braked to a s ...

Constant Acceleration: A Special Case In many types of motion, the acceleration is either constant or approximately so. For exam ...

and then as xx 0 vavgt, (2-12) in which x 0 is the position of the particle at t0 and vavgis the average velocity betweent0 ...

2-4 CONSTANT ACCELERATION 25 Checkpoint 4 The following equations give the position x(t) of a particle in four situations: (1) x ...

Additional examples, video, and practice available at WileyPLUS Another Look at Constant Acceleration* The first two equations i ...

2-5 FREE-FALL ACCELERATION 27 Next, we substitute for vwith Eq. 2-11: Sincev 0 is a constant, as is the acceleration a, this can ...

28 CHAPTER 2 MOTION ALONG A STRAIGHT LINE Checkpoint 5 (a) If you toss a ball straight up, what is the sign of the ball’s displa ...

2-6 GRAPHICAL INTEGRATION IN MOTION ANALYSIS 29 2-6GRAPHICAL INTEGRATION IN MOTION ANALYSIS After reading this module, you shoul ...

30 CHAPTER 2 MOTION ALONG A STRAIGHT LINE Combining Eqs. 2-27 and 2-28, we can write (2-31) For convenience, let us separate the ...

QUESTIONS 31 Average Speed The average speed savgof a particle during a time interval tdepends on the total distance the partic ...

apple’s release, the balloon is accelerating upward with a magni- tude of 4.0 m/s^2 and has an upward velocity of magnitude 2 m/ ...

PROBLEMS 33 ••10 To set a speed record in a measured (straight-line) distanced, a race car must be driven first in one direction ...

34 CHAPTER 2 MOTION ALONG A STRAIGHT LINE x Green car Red car xg xr Figure 2-27Problems 34 and 35. ••35 Figure 2-27 shows a red ...