Name: Date: Block: PHYSICS: UNIT 5 Work, Power, and Energy Part 1: WORK. Identify which form of work is being performed by the activity. Write the letter of the correct answer on the line to the left of the statement or question. A = mechanical work. B = Work against gravity. C = Work against resistance. D= Work against shape Bend a steel rod Climbing stairs Push a box across the floor Stretch a rubber band. Swim opposite river current Lifting a book to a shelf Tie knot in rope Inflate a balloon Shatter a window with a rock Tear paper Stretch a spring Ride in an elevator Pull a wagon Walk up a hill Stack blocks on top of each other Mold clay Part 2. WORK AGAINST GRAVITY and GRAVITATIONAL POTENTIAL ENERGY. The following problems involve work against gravity and gravitational potential energy (GPE). Calculate the work or GPE. Sabrina walks up stairs from the first floor to the Work = third floor. The vertical difference in height is 11.4 meters. Sabrina's mass is 60 kg. Calculate her work and GPE. GPE= A crane lifts four steel beams from the ground to Work = the 8th floor of a building that is under construction. The total mass of the steel beams is 6000 kg. The height is 32 m. Calculate the work and GPE. .An elevator carriage has eight passengers. The elevator transported the eight passengers to the 4th floor. The combined mass of the elevator and passengers was 5800 kg. The height is 17 m. Calculate the work and GPE. GPE= Work= GPE=