2-d_motion.ppt - Two-Dimensional Motion and Vectors Preview Section 1 Projectile Motion Section 2 Extra Questions Section 1 Two-Dimensional Motion and

2-d_motion.ppt - Two-Dimensional Motion and Vectors Preview...

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Two-Dimensional Motion and VectorsSection 1PreviewSection 1 Projectile MotionSection 2 Extra Questions
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Two-Dimensional Motion and VectorsSection 2Pythagorean Theorem and Tangent Function
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Two-Dimensional Motion and VectorsSection 2Resolving Vectors Into Components
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Two-Dimensional Motion and VectorsSection 2Resolving Vectors into ComponentsOpposite of vector additionVectors are resolved into xand ycomponentsFor the vector shown at right, find the vector components vx(velocity in the xdirection) and vy(velocity in the ydirection). Assume that that the angle is 20.0˚.Answers:vx= 89 km/hvy= 32 km/h
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Two-Dimensional Motion and VectorsSection 3What do you think?Suppose two coins fall off of a table simultaneously. One coin falls straight downward. The other coin slides off the table horizontally and lands several meters from the base of the table. Which coin will strike the floor first?Explain your reasoning.Would your answer change if the second coin was moving so fast that it landed 50 m from the base of the table? Why or why not?
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Two-Dimensional Motion and VectorsSection 3Projectile MotionProjectiles: objects that are launched into the airtennis balls, arrows, baseballs, wrestlersGravity affects the motionPath is parabolic if air resistance is ignoredPath is shortened under the effects of air resistance
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Two-Dimensional Motion and VectorsSection 3Components of Projectile MotionAs the runner launches herself (vi), she is moving in the xand y directions.,cosx iivv,siny iivv
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Two-Dimensional Motion and VectorsSection 3Analysis of Projectile MotionHorizontal motion No horizontal accelerationHorizontal velocity (vx) is constant. How would the horizontal distance traveled change during successive time intervals of 0.1 s each?
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