Solve the following motion problems. 1. A ball is thrown vertically from a point 30 feet above the ground. (a). At what velocity must it be thrown for it to strike the ground in 2 seconds? Is the ball initially thrown vertically upward or downward? (b). What is its velocity when it strikes the ground? (c). Where is the ball one second after it was thrown initially? Is it moving upward or already on its way down? (Hint: Take the time and displacemnet at the maximum point of its flight by setting v=0.)
Solve the following motion problems. 1. A ball is thrown vertically from a point 30 feet above the ground. (a). At what velocity must it be thrown for it to strike the ground in 2 seconds? Is the ball initially thrown vertically upward or downward? (b). What is its velocity when it strikes the ground? (c). Where is the ball one second after it was thrown initially? Is it moving upward or already on its way down? (Hint: Take the time and displacemnet at the maximum point of its flight by setting v=0.)
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Transcribed Image Text:Solve the following motion problems.
1. A ball is thrown vertically from a point 30 feet above the ground.
(a). At what velocity must it be thrown for it to strike the ground in 2 seconds? Is the ball initially thrown
vertically upward or downward?
(b). What is its velocity when it strikes the ground?
(c). Where is the ball one second after it was thrown initially? Is it moving upward or already on its way
down? (Hint: Take the time and displacemnet at the maximum point of its flight by setting v=0.)
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