The kinetic energy in the faster case is 4X as much (since KE = (1/2)m*v^2). The brakes must do an amount of work that is equal to the original kinetic energy. The brakes exert the same force in either case, so the distace will be 4X as long for the faster case.
Step-by-step explanation:
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Are you finding x and y? If you are:
Plug in the first equation into the y for the second equation and solve for x. Then once you get an x value from that, plug it into the first equation for x and solve for y and you get your x and y’s.
Answer:
Is there a picture, if not how many are in total and how many of each color
This problem is about linear equations. We assume Dale drive X miles, and the total cost is $Y, then we can get:
Plan I: Y=38+0.11X
Plan II: Y=49+0.07X
When both plans cost the same, 38+0.11X=49+0.07X. We will get X = 275miles, and Y=$68.25