4) Do WORK!

On a Saturday night my family and I went to Times supermarket to shop for groceries and other necessities for the week. We ended up purchasing a lot of food. There was so much food that when we got home, we had a lot of work to do. We had to carry about five to six packages to the second floor of our home. Now, this was no easy task because the stairs to the second floor of our house was long and the inside of each package was filled to the top with canned goods, milk, juice, vegetables, eggs, etc. You name it…we bought it!

Well, this tiring task relates to what we are learning in physics, WORK. Now, work has a very specific meaning in physics. The equation for Work is force multiplied by distance. Work requires two things: force, and motion in the direction of the force. If you are only holding an object overhead motionless rather than lift or change then you are not doing work. However, in this case, as my sister and I carried the bag of groceries up the stairs from the car to the second floor, we were doing work.  The force (our pull on the plastic bags) is in the direction of our motion (upwards).



My sister Cierra carrying some of the groceries up from the car into our house.