How to solve these 2 questions?

The answer I wrote in part 1 and part 2 of Q1 are correct.

Q1

Part 1) What is the velocity of the cart along the x axis at 4.70 s? Ux = 10.5 im/s Your last answer was interpreted as follows: 10.5 Part 2) Write an expression for the velocity ofthe cart along the x axis between I = 0 and I 2 IA 2 9.41 s. ox = awn-4.00 i m/s Your last answer was interpreted as follows: 3.09 - 1' 4.00 The variables found in your answer were: [1'] Part 3) What is the position of the cart at I = t3 = 18.82 S ? x: m The graph shows how the acceleration of a cart along the x axis changes with time (Figure 1). The cart starts with a speed UO 2 4.00 m/s, atx = 5.63 m. In the graph, aA = 3.09 ms'z, IA 2 9.41 s and r3 = 18.82 3. Give your answers with the correct number of signicant gures. (1 (m 82) \"A 0 tA t3 t (3) Figure 1: A horizontal and a vertical line connecting the acceleration and time axes to the coordinate (IA, 0A) on an acceleration-time graph. Another point is marked on the graph at the coordinate (I3, 0). On a windy day a wind blows from S 16.3 . W with a speed of 14.23 m/s. In this question i represents a unit vector in the easterly direction and j represents a unit vector in the northerly direction. Part 1) Present the velocity of the wind relative to the ground in unit vector notation. Vw rel g = -. m/s Part 2) You are on a boat travelling S 14.3 . E relative to the bank (ground) at a speed 2.94 m/s. What is the velocity of the wind relative to the boat? Give your answer in unit vector notation. Vw rel b = m/s Part 3) What is the velocity of the boat relative to the wind? Vb rel w = it i m/s