arm length 1.2m hand force down 360 N Problem 12. The position function of a particle is given by s(!) = * - 1215 + 45t+ 3, where time, t, is in seconds, distance, s, is in metres, and # 2 0. Find the velocity of the particle when the acceleration is zero. 13. An airplane is on a heading of 075 at 250 km/h and an 85 km/h wind is blowing from 300. Determine the resultant velocity of the airplane, using Cartesian vectors, and state the groundspeed and bearing of the resultant.10. The height, h, in metres, of a firework as a function of time, t, in seconds, is given by h(t) = -4.9:" + 981 + 2. Determine the maximum height of the firework. Verify it is a maximum. 1 1. Find the torque at the point A, the shoulder joint