Activity 2: Self-Test! Try to perform the following physical fitness tests and rate your performance on the second column. Then, answer the questions below in your activity notebook. Test/ Activity Sit and Reach Scoreſ Pass, Needs Improvement or Fail) Curl ups Push ups Zipper Test Truck Lift Answer the following questions.
1. What test is easy for you? Why?
2. What test is difficult for you? Why? 3. What test is most challenging for you? Why?

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.