<u>Answer:</u>
a) Height of cliff = 44.145 meter
b) 7.5 meter far from its base the diver hit the water.
<u>Explanation:</u>
We have equation of motion ,
, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
Diver's vertical motion:
Initial velocity = 0 m/s, acceleration = 9.8
, we need to calculate displacement when time is 3 seconds.
![s= ut+\frac{1}{2} at^2\\ \\ =0*3+\frac{1}{2} *9.81*3^2\\ \\ =44.145meter](https://tex.z-dn.net/?f=s%3D%20ut%2B%5Cfrac%7B1%7D%7B2%7D%20at%5E2%5C%5C%20%5C%5C%20%3D0%2A3%2B%5Cfrac%7B1%7D%7B2%7D%20%2A9.81%2A3%5E2%5C%5C%20%5C%5C%20%3D44.145meter)
So height of cliff = 44.145 meter.
b) Diver's horizontal motion:
Initial velocity = 2.5 m/s, acceleration = 0
, we need to calculate displacement when time is 3 seconds.
![s= 2.5*3+\frac{1}{2}*0*3^2\\ \\ =7.5meter](https://tex.z-dn.net/?f=s%3D%202.5%2A3%2B%5Cfrac%7B1%7D%7B2%7D%2A0%2A3%5E2%5C%5C%20%5C%5C%20%3D7.5meter)
So 7.5 meter far from its base the diver hit the water.
Answer:
<h2>2 m/s²</h2>
Explanation:
The acceleration of an object given it's velocity and time taken can be found by using the formula
![a = \frac{v}{t} \\](https://tex.z-dn.net/?f=a%20%3D%20%20%5Cfrac%7Bv%7D%7Bt%7D%20%20%5C%5C%20)
v is the velocity
t is the time taken
From the question we have
![a = \frac{2}{1} \\](https://tex.z-dn.net/?f=a%20%3D%20%20%5Cfrac%7B2%7D%7B1%7D%20%20%5C%5C%20)
We have the final answer as
<h3>2 m/s²</h3>
Hope this helps you
Answer:complex
Brainly.com
Question
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Answer · 38 votes
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MoreExplanation:thats it!!!! i <em>guessed∦∩⊕</em>
The answer is B as all the other options contain quantities not related to describing motion
45 hours/15 hours = 3 Half lifes
50/2 = 25
25/2 = 12.5
12.5/2 = 6.25
6.25g is the answer