Q4/ A rock is dropped from the top of the Eiffel Tower and reached the height of 30m above the ground. The rock height at t sec. was S = 64t3 – 144t2 + 108t – 27.Find: %3D a. How long does it take to hit the ground? b. What is the velocity of the rock at the time of the impact?

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Chapter3: Vectors And Two-Dimensional Motion
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Q4/ A rock is dropped from the top of the Eiffel Tower and reached the height of 30m above the
ground. The rock height at t sec. was S = 64t3 – 144t? + 108t – 27.Find:
a. How long does it take to hit the ground?
b. What is the velocity of the rock at the time of the impact?
Transcribed Image Text:Q4/ A rock is dropped from the top of the Eiffel Tower and reached the height of 30m above the ground. The rock height at t sec. was S = 64t3 – 144t? + 108t – 27.Find: a. How long does it take to hit the ground? b. What is the velocity of the rock at the time of the impact?
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