L10 - Remember:ThisWeek FinishreadingCh.3andbeginCh.4.

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Remember: This Week Finish reading Ch. 3 and begin Ch. 4. Recita’on this week : Vectors – print and bring Recita=on Assignment to Recita=on session. CAPA assignment #4 is due Friday evening at 10 PM, to be done on‐line. L10 W 2/3/10 1 Physics 2010
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L10 M 2/4/09 Physics 2010 2 Projectile Motion in 2D
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L10 M 2/4/09 Physics 2010 3 A projectile can be understood by analyzing the horizontal and vertical motions separately. Projectile Motion in 2D
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L10 M 2/4/09 Physics 2010 4 Projectile Motion in 2D The speed in the x -direction is constant; in the y -direction the object moves with constant acceleration g . This photograph shows two balls that start to fall at the same time. The one on the right has an initial speed in the x -direction. It can be seen that vertical positions of the two balls are identical at identical times, while the horizontal position of the yellow ball increases linearly.
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L10 M 2/4/09 Physics 2010 5 Projectile Motion in 2D If an object is launched at an initial angle of θ 0 with the horizontal, the analysis is similar except that the initial velocity has vertical & horizontal components.
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L10 M 2/4/09 Physics 2010 6 Projectile Motion in 2D +y +x Vertical y-direction Horizontal x-direction a
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L10 - Remember:ThisWeek FinishreadingCh.3andbeginCh.4.

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