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Back on Earth, a ball is thrown off a roof top with a horizontal velocity 7.4...

Back on Earth, a ball is thrown off a roof top with a horizontal velocity 7.4 m/s and a upward vertical velocity 3.9 m/s. It hits the ground 3.8 s later. What is the direction at which the ball hits the ground? Give the angle the velocity vector makes with vertical (straight down = 0o and horizontal = 90o).

Use g = 9.8 m/s2 if needed and neglect air friction.

Read carefully -- there are versions of this question with upward vertical velocity and another with downward vertical velocity.

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Answer #1

SA Vyt = 3.9-33x38 33.3 h/s ur Ук 8 33.3

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