The Energy in a specific piece of matter is equal to its mass times the square of the speed of light.
You might usefully investigate the units in this equation: was Einstein using ergs, grams, kilometers or what.
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There is a serious flaw in the "double-equation". 8.6 = 5p - 4p = 2.4 It would imply that 8.6 = 2.4 which is clearly not true.
The equations are inconsistent. If you divide the first equation by 2, you get y + 4x - 6 = 0 or 4x + y - 6 = 0 or 4x + y = 6 The second equation, however, gives 4x + y = -6 The two equations, taken together would imply that 6 = -6 which is false.
That is the equation of a straight line intersecting the axis at (4,0) and (0,-4). There is no "answer" as such; an "answer" would imply that you require specific values for x and y at a certain place (e.g where this line meets another line), which clearly cannot be answered with the details given: you have two variables (x and y) and one equation. You MUST have at least the same number of equations as variables in order to solve for x, y etc...
S equals -10t2 plus vt plus k This is one of the three formulae for motion. The standard form is S = ut + 1/2ft2. S = distance, u = initial velocity, f = acceleration, t = time, k is unknown. The equation in the question could thus be written, S = ut - 10t2 +k. This would imply that the acceleration is -10.
Implication is the noun form of "imply."