Find the velocity, acceleration, and speed of a particle with the given position function. r(t) = :21 + 7tj + 5 In(t)k v(!.') = 2ri+7j+ %k w 2i g1; 13 = a() 2 v |V(f)| = V 4r4+4gr2+25 I A projectile is fired with an initial speed of 210 m/s and angle of elevation 60. The projectile is red From a position 100 m above the ground. (Use 9 = 9.8 m/sz. Round your answers to the nearest whole number.) (3) Find the range (in m) of the projectile. 3954 / m (b) Find the maximum height (in m) reached. xm (c) Find the speed (in m/s) at impact. -x m