Two-Dimensional Motion and VectorsSection 1PreviewSection 1 Projectile MotionSection 2 Extra Questions

Two-Dimensional Motion and VectorsSection 2Pythagorean Theorem and Tangent Function

Two-Dimensional Motion and VectorsSection 2Resolving Vectors Into Components

Two-Dimensional Motion and VectorsSection 2Resolving Vectors into Components•Opposite of vector addition•Vectors are resolved into xand ycomponents•For 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/h–vy= 32 km/h

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?

Two-Dimensional Motion and VectorsSection 3Projectile Motion•Projectiles: objects that are launched into the air–tennis balls, arrows, baseballs, wrestlers•Gravity affects the motion•Path is parabolic if air resistance is ignored•Path is shortened under the effects of air resistance

Two-Dimensional Motion and VectorsSection 3Components of Projectile Motion•As the runner launches herself (vi), she is moving in the xand y directions.,cosx iivv,siny iivv

Two-Dimensional Motion and VectorsSection 3Analysis of Projectile Motion•Horizontal motion –No horizontal acceleration–Horizontal velocity (vx) is constant. •How would the horizontal distance traveled change during successive time intervals of 0.1 s each?

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- Spring '19
- Physics, Force, Projectile Motion, Velocity, tennis ball