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AP PHYSICS 1 EXAM SOLUTION GUIDE

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AP EXAM QUESTIONS 1-5 2 Dim Motion 1. C If both balls are thrown from the same height horizontally, they will both strike the ground at the same time (because all of the vertical variables are th ... e same). Also note that vertical acceleration (9.8 m/s2) does not depend on mass. ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ 2. E In projectile motion (which is free-fall), the acceleration is always 9.8 m/s2 down, so the acceleration stays the same during the entire flight. ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ 3. B The vertical component of the ball’s velocity obeys the equation y y v gt v0 = − + . This equation is a line with a slope of –g and an intercept of v0y. The negative slope means the graph can only be Graph 2. ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ 4. C The horizontal component of the ball’s velocity is constant and not zero, and Graph 3 is the graph of a constant but non-zero function. ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ 5. C The speed of the ball is never zero, but decreases on the way up and increases on the way down. Since it decreases on the way up, speed is the least at the peak of the trajectory. ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ AP EXAM QUESTIONS 6-10 Mom [Show More]

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