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spin [16.1K]
3 years ago
15

A football player kicks a ball with a mass of 0.42 kg. The average acceleration of the football was 14.8 m/s².

Physics
2 answers:
Soloha48 [4]3 years ago
7 0
A
Because F=ma and the unit of F is always in N. 
vivado [14]3 years ago
3 0

The answer will be D. 6.22 newtons

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identify each type of radiation as ionizing or non-ionizing. remember that ionizing radiation deposits enough energy when absorb
Tju [1.3M]

According to the definition given, non-ionizing means using microwaves on a substance without causing charged ions to form by removing electrons from atoms.

<h3>What kind of energy exist?</h3>

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1 year ago
A slingshot is used to launch a stone horizontally from the top of a 20.0 meter cliff. The stone lands 36.0 meters away.
alisha [4.7K]
A) 

     It is a launch oblique, therefore the initial velocity in the vertical direction is zero. Space Hourly Equation in vertical, we have:

S=S_{o}+v_{o}t+ \frac{at^2}{2} \\ 20= \frac{10t^2}{2} \\ t=2s
 
     Through Definition of Velocity, comes:

\Delta v=  \frac{\Delta S}{\Delta t}  \\ v_x= \frac{36}{2}  \\ \boxed {v_{x}=18m/s}


B)
 
     Using the Velocity Hourly Equation in vertical direction, we have:

v_{y}=v_{y_{o}}+gt \\ v_{y}=10\times2 \\ \boxed {v_{y}=20m/s}
  
     The angle of impact is given by:

cos(\theta) =\frac{v_{x}}{v_{y}}  \\ cos(\theta) = \frac{18}{20}  \\ cos(\theta) =0.9 \\ arccos(0.9)=\theta \\ \boxed {\theta \approx 25.84}


If you notice any mistake in my english, please let me know, because i am not native.

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3 years ago
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Due to diseases, affected people can not work  which negatively affects the economy, and the sick may end up dying causing a lot of grief, and robbing society of a father, a mother or child.

The government has to put money aside for health care which would otherwise have been used for other things to help the society.

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Based on molecular orbital theory, the only molecule in the list below that has unpaired electrons is ________.
xenn [34]
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Which statement best summarizes the theory of evolution by natural selection?
prisoha [69]

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c is the one that makes the most sense

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