Question

A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A second rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance? A) 5.51 m/s downward B) 12.3 m/s upward C) 12.3 m/s downward D) 4.76 m/s upward E) 4.76 m/s downward

          A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A second rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance?
A) 5.51 m/s downward
B) 12.3 m/s upward
C) 12.3 m/s downward
D) 4.76 m/s upward
E) 4.76 m/s downward

A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A second rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance?
A) 5.51 m/s downward
B) 12.3 m/s upward
C) 12.3 m/s downward
D) 4.76 m/s upward
E) 4.76 m/s downward

Added by Brittany T.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Surjit Tewari

05/07/2022

Step 1

00 s Using the equation h = 0.5 * g * t^2, where g = 9.8 m/s^2 h = 0.5 * 9.8 * (3.00)^2 h = 44.1 m Show more…

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A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A second rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance? A) 5.51 m/s downward B) 12.3 m/s upward C) 12.3 m/s downward D) 4.76 m/s upward E) 4.76 m/s downward