Someone help please questions 88-93.

A machine launches a tennis ball at an angle of 45 with the horizontal, as shown. The ball has an initial vertical velocity of 9.0 meters per second and an initial horizontal velocity of 9.0 meters per second. The ball reaches its maximum height 0.92 seconds after its launch. [Neglect friction and assume the ball lands at the same height from which it was launched.] Elapsed Time = 0.92 s Viy = 9.0 m/s Launcher Vix = 9.0 m/s 450 Horizontal 81 Calculate the speed of the ball as it leaves the 87 On the diagram draw an arrow to show the launcher. [2] direction of the ball's acceleration at its maximum 82 Calculate the total horizontal distance traveled by height. Label the arrow a. [1] the ball during the entire time it is in the air. [2] 83 Compare the vertical acceleration of the ball at the Base your answers to questions 88 through 93 on the time of launch to the vertical acceleration of the following information and diagram. ball at elapsed time 0.92 second. [1] A flat racetrack viewed from above has curves with 84 Sketch a graph to represent the relationship radii of 50.0 meters and 100. meters. A car having a between the horizontal speed of the ball and mass of 1.00 X 10 kilograms moves counterclockwise elapsed time. [Neglect friction.] around the track at a constant speed of 20.0 meters per second. It takes the car 20.0 seconds to travel from C to D. Speed Horizontal 50.0 m 100. m Time 85 State the change, if any, in both the vertical component and horizontal component of the ball's velocity as it rises. [1] 88 What is the magnitude of the net force acting on the car while it is moving from A to B? [1] 86 On the diagram draw an arrow to show the direction of the ball's velocity at its maximum 89 Calculate the net force acting on the car while it is height. Label the arrow v. [1] moving from B to C. [2] 68 Topic 2: Mechanics 90 Calculate the distance from C to D. [2] 98 On the same grid, draw a line to represent 91 Compare the magnitude of the centripetal acceleration due to gravity on Earth. [2] acceleration of the car while moving from D to A, to the magnitude of the centripetal acceleration of Base your answers to questions 99 through 104 on the car while moving from B to C. [1] the following information. 92 Compare the magnitude of the car's momentum A child pulls a cart with rubber wheels at constant at D to the magnitude of the car's momentum speed across a dry, horizontal concrete surface by at B. [1] exerting a force of 50. newtons at an angle of 35 93 Compare the magnitude of the centripetal above the horizontal. acceleration of the car at A to the magnitude of the car's centripetal acceleration at A if additional passengers were riding in the car. [1] Base your answers to questions 94 through 98 on the following information and data table. An astronaut on a distant planet conducted an experiment to determine the gravitational acceleration on that planet. The data table shows the results of the experiment. 94 On the grid provided mark an appropriate scale on the axis labeled "Weight (N)." [1] 95 Plot the data points. [1] 96 Draw the best-fit line. [1] 97 Using the graph, calculate the acceleration due to gravity on the planet. [1] Weight vs. Mass Data Table Mass Weight (kilograms) (newtons) 15 10 Weight (N) 20 14 25 179 30. 216 35 249