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ololo11 [35]
3 years ago
10

3- A ball of mass 0,50 kg falls and hits the floor at 10m/s,

Physics
1 answer:
Klio2033 [76]3 years ago
4 0

Answer:

3- A ball of mass 0,50 kg falls and hits the floor at 10m/s,

It rebounds at speed 8.0 m/s, as shown.

before collision

after collision

10 m/s

8 m/s

The collision between the ball and the floor lasts for 0.50 s.

What is the average force acting on the ball during the collision?

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grin007 [14]
Hello!

Work is equal to negative change in PE and PE=mgh and Power is change in work/change in time

So we have 

56.1kg * 9.80m/s^2 * 16m = 8796.5 J of PE at top of run and -8796.5J of work done also

if it takes him 12s then we need to find the time gravity alone would bring him to the bottom. we get

16m=1/2at^2 and solving for t we get 
t=sqrt(32/9.80m/s^2)=1.81s

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now we can find avg power=work/time = 8796.5J/11.2s = 785W or 785J/s

Hope this helps! Any questions please ask! Thank you!
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3 years ago
When two atoms of the same nonmetal react, they often form a(an) A. ionic bond. B. polyatomic ion. C. diatomic molecule. D. pola
Mariana [72]
<span>When two atoms of the same nonmetal react,they form what we know today as a diatomic molecule.</span>
5 0
3 years ago
Read 2 more answers
1. A car is traveling at 36 m/s hits a tree and comes to rest in 0.05 seconds.
QveST [7]

Answer: a. -720m/s^2

b. Yes, airbags will deploy

Explanation:

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Since it's negative, it shows that there was a deceleration.

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likoan [24]
Answer :

C) Atom

Actual answer should be element but depends on the way you interpret the question and the options given to answer it

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Hope it helps if it does let me know by thanking
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3 years ago
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