The answer would be 0.40m. you are finding how far the distance is between 10 and 50
Answer:
-6112.26 J
Explanation:
The initial kinetic energy, 
is given by
} where m is the mass of a body and 
is the initial velocity
The final kinetic energy, 
is given by
where 
is the final velocity
Change in kinetic energy, 
is given by
Since the skater finally comes to rest, the final velocity is zero. Substituting 0 for and 12.6 m/s for and 77 Kg for m we obtain
From work energy theorem, work done by a force is equal to the change in kinetic energy hence for this case work done equals <u>-6112.26 J</u>
So first Identify all the given Varibales so u can choose which Eqauton to use
D=200m
T=4s
Vi=10m/s
Vf=?
You should this equation
D= 0.50(Vf+Vi)T
Plug in the values
200= 0.50 (Vf+10) 4
Divide the 4 out of the right side and if you do sumthing to one side you gotta do it to the other
200 divided by 4= 0.50(Vf+10)
50= 0.50(Vf+10)
Now expand the 0.50
So 50= 0.5Vf + 5 (because 0.5 times 10 is 5)
Now get rid of the 5
50-5= 0.5Vf
45 =0.5Vf now Divide the 0.5 out
45 divided by 0.5 = Vf
And 45/0.5 is 90
So 90=Vf
Therefore the final Velocity is 90m/s
Answer:
transition metals im sorry if this was too late
The answer to your question is: Yes.
To solve each and every one, write the two given numbers in place of their letters in the given equation, and then solve the equation for the letter that's left.
For example, let's do #1 together. I'll do all the work, and you just watch.
#1 says that s=d/t. It also tells us that 'd' is 4 and 't' is 2. So here's a great idea: Why don't we write '4' where it says 'd', and write '2' where it says 't', and then see what we've got ?
s = 4/2
Wow ! We know that 4/2 is 2 . So s=2 and that's exactly the answer to the question !
Now it's YOUR turn. Do the next 25 problems the same way.
