ACTIVITY 1

ACTIVITY 1 "Work, Work, Work!* Instruction: List at least two activities showing work done on the object is positive, negative, or zero. Copy the table in a separate paper and perform the activity Activity Hemarks for Work Done Example: Pushing a long box over a surface. and move it Im on Positive the direction of the force Example: Pulling a carabao towards wait, but the carabao moves dur call. Example: Pushing a concrete wall THO ANALYSIS 1 To deepen your ideas about the activities, answer all the guide ques- tions in a separate answer sheet I. In an activity wherein you sweat, and become exhausted, is there a possi- bility that even with your effort you did a zero work? Explain your answer. 2. It is said that work is an integrated concept of energy transformation, what is your stand about this?A. Solve the Problems carefully. Follow the steps in the previous example. Write your answer on a separate answer sheet. 1. A box is pulled by a constant 100 N force using a rope elevated from a surface with an angle of 459. If the box displaces 5.00 m horizontally, what then is the work done on the box? 2. As the box slides on the slippery icy floor, you pulled the rope attached to a box preventing it to move farther away. If you exert 300 N force on the rope that is elevated with an 309 from the level ground, what then is the work done on the box? 3. A truck has a gross weight of 1.0 x10$ N. Assuming that the concrete road has a coefficient of friction of 0.80, how much work is done by the road, when the truck travelled its full 500m length? 4. A farmer is carrying a 50kg sack of rice, along a 20 m horizontal side- walk, How much work is done on a sack of rice? B. Copy the table below on a separate sheet of paper, then fill in the miss- ing values to complete the table. Angle from a Displace- Constant Net force Displace- Work done ment Example: 500 N 10 m 2500 J 1000 N 200 50 m 250 N 800 500 J 340 N 270% 20m 12:03 10 1000 J 2000 N 1509 17320.5 J