hello I need help solving those questions in the next hour please thank you so much in advance!

n a A ball is thrown directly downward, with an initial speed of 8.42m/s, from a height of 28.1m. After what interval does the ball strike the ground? 4.185 Submit Answer Incorrect. Tries 1/10 Previous Tries 0 R (9a) The velocity-time graph of a particle moving along the x-axis is shown. The particle has zero velocity at t = 0.00 s and reaches a maximum velocity, Vmaxr after a total elapsed time, trotal- If the initial position of the particle is x0 = 5.57 m, the maximum velocity of the particle is Vmax = 13.6 m/s, and the total elapsed time is ttatal = 29.1 5, what is the particle's position att = 19.4 5? Submit Answer Tries 0/10 (9b) Att = 19.4 5, what is the particle's velocity? Submit Answer Tries 0/10 (9c) At t = 19.4 5, what is the particle's acceleration? Submit Answer Tries 0/10 V,(m/s) 0 a A skier is gliding along at 3.22m/s on horizontal, frictionless snow. He suddenly starts down a 13.8 incline. His speed at the bottom is 29.0m/s. What is the length of the incline? 121m Submit Answer Incorrect. Tries 7/10 Previous Tries How long does it take him to reach the bottom? Submit Answer Tries 0/10 0 a (5a). You are driving to the grocery store at 11.9 m/s. You are 1790 m from an intersection when the traffic light turns red. How far are you from the intersection when you begin to apply the brakes? Assume that your reaction time is 0.470 s, that your car brakes with constant acceleration, and that you are initially moving in the positive direction. The reaction time is dened as the time it takes for you to recognize the light is red and to begin applying the brakes. Submit Answer Tries 0/10 (5b). What acceleration will bring you to rest as you just reach the intersection? Submit Answer Tries 0/10 (5c). How long does it take you to stop? Submit Answer Tries 0/10