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QUESTION 2 [15] 2.1 A projectile is fired from a position on the ground. The motion of the projectile in two dimensions is represented by the parametric equations, x = 20 . e" and y = 02.026. Find the equation for the velocity and acceleration of the projectile. (6) 2.2 Find ay and if z = xely. (4) 2.3 If 9 = , where k and 1., is a constant, and there are possible errors of + 0.2% in measuring # and V, find the maximum possible error in the calculated value of 9. (5) [15]