QUESTION 4 The equations for motion in a straight line with constant acceleration are given by the following 4 equations, where vo= initial velocity, a = acceleration, v= velocity, t = time, xo = initial position: v=v + at x= xo +Vot to + v+ = a v =v +2a(x-xo) (x-x)-(+) 2 A motorist heading east through a small city accelerates after he passes the signpost marking the city limits. His acceleration is constant at 3.0m/s. At time t=0, he is 4.0m east of the signpost, moving east at 40km/h. a) Find his position and velocity at time t=2.5s. (Remember to do the conversion from km/h to m/s) b) Where is the motorist when his velocity is 50km/h? c) Instead of accelerating the speed to 50km/h, the motorist decelerates constantly by 2.5 m/suntil the motorcycle is completely stopped. Find his new position.