A ball is projected upward at time=0.00 s, from a point on a roof 80 m...

 

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A ball is projected upward at time=0.00 s, from a point on a roof 80 m above the ground and experiences negligible air resistance. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 20.5 m/s. Consider all quantities as positive in the upward direction. The velocity of the ball when it is 43 m above the ground is closest to C) -41 m/s. A) -34 m/s. B) -14 m/s. D) -20 m/s. E) -27 m/s. A ball is projected upward at time=0.00 s, from a point on a roof 80 m above the ground and experiences negligible air resistance. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 20.5 m/s. Consider all quantities as positive in the upward direction. The velocity of the ball when it is 43 m above the ground is closest to C) -41 m/s. A) -34 m/s. B) -14 m/s. D) -20 m/s. E) -27 m/s.

Answer rating: 100% (QA)

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