Ask a New Question

Question

A rok is thrown 24 meters/sec upward and lands in a 10 meter deep hole. How long is the rock in the air until it reaches the bottom of the hole?
13 years ago

Answers

Elena
Upward motion:
v=vₒ-gt
v=0
t= vₒ/g=24/9.8=2.45 s.
The height
h = [(v(fin) ² -v(init)²]/2•(-g) = 24²/2•9.8=29.4 m
Downward motion from the height
H=29.4+10 =39.4 m.
t=sqrt(2H/g) = sqrt(2•39.47/9.8) = 2.84s
Total time = 2.45+2.84 =5.29 s.
13 years ago

Related Questions

A ball is thrown 12 meters in the air (so that the initial up-and-down distance is 24 meters). The b... If there is 5 meters per second how much many is in a meter? a rock is thrown 1.8 meters into the air. find how fast it was thrown? A pool is 8 meters by 5 meters wide. It has a walkway around the pool that is .8 meters wide. What i... put 28 meters 2 meters 4 meters 8 meters and 7 meters from highest to lowest How many meters are in 6,000 millimeters? There are 1,000 millimeters in one meter.(1 point) Respon... If h=10 meters and m∠C = 39° , then what is the length of side a? Round your answer to the nearest w... There are 1,000 meters in a kilometer, and 3,600 seconds in an hour. You can convert units of meters...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use