Hint: watch for conversions, watch out for distractors (unneeded information) 1. A 1 kg rock is released from rest at a height of 50.0 m. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and the total mechanical energy at each of the following heights (use g=10 m/s/s). a. 50.0 m KE PE TME b. 30.0 m KE PE TME C. 0.0 m KE PE TME 2. Caitlin wants to throw a 2 kg ball so that it hits a Frisbee that is stuck 5 m up in a tree. How fast does Caitlin need to throw the ball up (from ground level) so that it reaches the Frisbee? (use g=10 m/s/s) a. Set up the correct equation b. Correct substitutions into the equation c. Algebra to solve for final velocity 3. If Katy is pulling a 20.0 kg suitcase by a strap at an angle of 60 degrees as shown below with a force of 10 N along a frictionless surface. (use g=10 m/s/s). Possibly helpful information: (sin 60=.866 , cos 60=0.5 , tan 60 = 1.73) a. How much work has she done on the suitcase after dragging it 3.0 m b. Find the speed of the suitcase after it has moved 2 m