PLEASE answer all the given problems (1, 2, 3). Read the direction to be guided. Show your step-by-step solutions on how you get the answers. Thank you so much.

Directions: Solve the following problems at the back of this page. Use GRFSA. Box your final answers. This will be recorded under Performance Task 4. 1. The swimmer shown in the figure exerts an average horizontal backward force of 80.0 N with his arm during each 1.80 m long stroke. (a) What is his work output in each stroke? (b) Calculate the power output of his arms if she does 120 strokes per minute. m = 50 kg CG -1.8 m- 2. What is her useful power output if she does 25 push-ups in 1 min? 0.90 m auction 1.50 m O_object 3. An object of mass 2kg is held 3m above the floor of a room. Find the gravitational potential energy (GPE) and kinetic energy (KE) of the object relative to a table surface 0.8m above the floor as shown. All activities were derived from the learning modules. All credits belong to the rightful owners. Reference: Balala, Ymor. La Union Schools Division Region 1. AIRs- LM in General Physics 1. Module 18