Kinetic energy possessed by moving train is 
.
And mass
.
The formula for kinetic energy is
.
Solve for velocity:
Now put in the data:
And mass
The formula for kinetic energy is
Solve for velocity:
Now put in the data:
I need help this is for the people who know how to do graphs…
1 answer:
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Answer:
a)
b)
c) Yes.
Step-by-step explanation:
We have that:
And we have $10 free of taxes.
Making x= number of tires to buy, then we have that the total cost of tires is:
So, what we pay for taxes is given by:
a) Then, according to the above, we can write down the total cost before the discount as:
b) And the total cost after discounts, is then given by:
c) If the discount is added first, then less tax will be paid because the amount on which it is paid is lower. If the discount is added later, then the taxes will have been taxed on a higher amount, so it does matter whether they are added first or later.