FA 3.2: A ball rolls off the edge of a 15.0 m tall cliff with a purely
horizontal velocity, and strikes the ground at a distance of 12.4 m from
the base of the cliff. 1. What time was the ball in the air? (1.75 s) 2.
What was the ball’s horizontal velocity? (7.09 m/s) 3. What is the
final vertical velocity? (Just before it hits the ground) (-17.1 m/s)
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FA 3.2: 4-5: Draw a picture of the final velocity of impact. Calculate
the speed it is traveling, and find the angle below horizontal the
velocity makes. (speed = 18.6 m/s, 67.5o below horiz.)
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2. A ball leaves the edge of a cliff with a purely horizontal velocity of
12.5 m/s, and lands 25.0 m from the base of the cliff
a. How high is the cliff? b. What time does it take the ball to hit the
ground? c. What is the final vertical velocity? (Just before it hits the
ground) 19.6 m, 2.00 s, -19.6 m/s
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2. d. Draw a picture of the final velocity of impact. Calculate the
speed it is traveling, and find the angle below horizontal the velocity
makes. 23.2 m/s, 57.5o blw hrz
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4. A ball is projected sideways at 13.5 m/s from the top of a 9.70 m tall
cliff. a. What time is the ball in the air? b. How far from the base of
the cliff does the ball land? c. What is the final vertical velocity? (Just
before it hits the ground) 1.41 s, 19.0 m, -13.8 m/s
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4. d. Draw a picture of the final velocity of impact. Calculate the
speed it is traveling, and find the angle below horizontal the velocity
makes. 19.3 m/s, 45.6o blw hrz
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