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tion 5 An object is launched from the surface of Venus. Its height, in m, is given in terms of the et ered time, t in seconds, by H(t) = 10 + 90t - 4.5t. Use limits, to answer the following. a) What is the initial velocity of the object? ed out of b ) What is the velocity of the rocket at 10s? What does this imply? g c) What is the maximum height of the rocket? tion d When does the object return to the ground? What is the average velocity of the entire flight? 7 A v B I WN E