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August 27 AP physics

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In: A rock is dropped off a cliff and strikes the ground with an impact velocity of 30 m/s. How high was the cliff? 15 m 20 m 30 m 45 m 60 m

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Objective: To begin our study of 2 dimensional motion.

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Homework check

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**2 dimensional motion Must be solved using vectors Displacement vectors**

Velocity vectors Acceleration vectors Force vectors

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Combining vectors Only the same type of vector can be combined.

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Components of vectors

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Vector problem set

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Out: A sailboat is heading due west at 10 m/s. The wind is blowing at 5 m/s to the north. What is the actual velocity of the boat?

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Projectile Motion. Projectile- only force on object is gravity Trajectory- projectile’s path Independence of Motion – Velocity and acceleration are vectors.

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