If a rock is thrown upward on the planet Mars with a velocity 7 m/s, its height in meters t seconds later is given by y = 7t − 1.86t2. (a) Find the average velocity (in m/s) over the given time intervals. (i) [1, 2] (ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001] (b) Use your answers from part (a) to estimate the instantaneous velocity of the rock (in m/s) when t = 1.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

The answer is poppy pants69