he skateboarder on the diagram to the right. B. Choose an xy coordinate system. Add this to your diagram above. Combine Files Hint: What is the direction of the centripetal acceleration at the point indicated? C. Break up any forces not along the directions chosen and figure out the components in terms of the 30" angle shown Draw the components on the figure and write down what they are equal to below. (For example, if you choose to break up the normal force, you might have Ny = N sin 309) ED Organize Pages D. Write down Newton's 2" law for the x direction chosen. Compress PDF E. Write down Newton's 2" law for the y direction chosen. Redact F. Calculate the centripetal acceleration. This is very simple to do, you don't need either of the equations written above G. Calculate the tangential acceleration. Use one of your equations from either D or E. Protect H. Calculate the normal force acting on the skateboarder. Use the other equation Adobe Sign I Suppose the skateboarder trips at the point indicated and is sliding on the quarter pipe at the same speed (3.0 m/s). The coefficient of kinetic friction between his clothes and the track is 0.25. Your goal is to calculate his tantengial acceleration in this situation. a. Draw the same free body diagram you did above, and add the force of kinetic friction. b. One of the equations from before doesn't change. The other does. Write the changed Lu Fill & Sign equation below. C. Calculate the force of kinetic friction. Convert, edit and e-sign PDF d. Calculate his tangential acceleration in this situation. forms & agreements