LN_Sec_12-6

# LN_Sec_12-6 - MOTION OF A PROJECTILE(Section 12.6 Todays...

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MOTION OF A PROJECTILE (Section 12.6) Today’s Objectives: Students will be able to analyze the free-flight motion of a projectile. In-Class Activities: Check homework, if any Reading quiz Applications Kinematic equations for projectile motion Concept quiz Group problem solving Attention quiz

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READING QUIZ 1. The downward acceleration of an object in free-flight motion is A) zero B) increasing with time C) 9 . 81 m/s 2 D) 9 . 81 ft/s 2 2. The horizontal component of velocity remains _________ during a free-flight motion. A) zero B) constant C) at 9 . 81 m/s 2 D) at 32 . 2 ft/s 2
APPLICATIONS A kicker should know at what angle, θ , and initial velocity, v o, he must kick the ball to make a field goal. For a given kick “strength”, at what angle should the ball be kicked to get the maximum distance?

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APPLICATIONS (continued) A fireman wishes to know the maximum height on the wall he can project water from the hose. At what angle, θ , should he hold the hose?
CONCEPT OF PROJECTILE MOTION Projectile motion can be treated as two rectilinear motions, one in the horizontal direction experiencing zero acceleration and the other in the vertical direction experiencing

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LN_Sec_12-6 - MOTION OF A PROJECTILE(Section 12.6 Todays...

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