In the small arc (radius 10 m), you enter the turn at the top at 13 m/s, and slow down uniformly to 7 m/s over 2 seconds to the end of the turn. a. What is the magnitude of the acceleration at point X when your speed is 10 m/s? X b. Draw an arrow at X indicating the direction of the acceleration at that point. What is the angle between the directions of the velocity and acceleration vectors at that point? A golf ball is struck at ground level. The speed of the golf ball as a function of the time is shown in the figure, where t = 0 at the instant the ball is struck. The scaling on the vertical axis is set by Va = 19 m/s and Vb = 31 m/s. a. How far does the golf ball travel horizontally before v (m/s) returning to ground level? Van 2 3 4 t (s) b. What is the maximum height above ground level attained by the ball?You drive a go-cart around a track as shown below, consisting of two arcs connected by two straight-aways as shown. The radius of the larger arc is 30 meters, and the radius of the smaller arc is 10 meters. a. You drive at a constant 7.0 m/s clockwise around the track. What are the accelerations at the points W, X, Y, and Z? Write the magnitude of a and draw an arrow indicating the direction of a at each point. Draw the arrows to scale so a larger acceleration gets a longer arrow. Write "a=0" if the acceleration is zero. W X Z Y b. Your friend drives the small arc (X) at 7 m/s, then accelerates on the lower straight-away (Y) from 7 m/s to 13 m/s in 2 seconds, drives the large arc (Z) at a constant speed of 13 m/s, and then slows back down on the top straight-away (W) from 13 m/s to 7 m/s in 2 seconds. What is your friend's acceleration at the points W, X, Y and Z? Write the magnitude of a and draw an arrow indicating the direction of a at each point. W X Z Y