The kinetic energy of the roller coaster is 2000Joules
Given the formula for expressing the velocity of the roller coaster is given as:
Given the following parameter:
v = 10m/s
Substitute the given parameter into the formula to have:
Square both sides of the equation:
Hence the kinetic energy of the roller coaster is 2000Joules
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The answer that I got when doing the calculations is A=70.
We will use the formula for finding the surface area of a rectangular prism.
Formula =
SA <span>= </span><span>2 </span><span>(</span><span>w</span><span>l</span><span>+</span><span>h</span><span>l</span><span>+</span><span>h</span><span>w</span><span>)</span>SA = 2 (8·14 + 4·14 + 4·8)
SA = 2 (112 + 56 + 32)
SA = 2 (200)
SA = 400
The gift box needs C) 400 in wrapping paper to wrap the gift box. <span />
To compare the values,you must first calculate each given situation. The area of any given rectangle is length times width.
a) if w=6 and l=8
A= l*w = 8*6 = 48
b) if w=7 and l=7
A= l*w = 7*7 = 49
Therefore, the second case would yield a larger area. The answer would be w=7 and l=7. Total area would be 49 square units.
3.8^2 + 6.8^2 = x^2 because the Pythagorean theorem is a^2 + b^2 = c^2 which c is the longest side or c in this case
