Decided wheather work is being done or not. If it is being down write W. If not write N
1. You throw a baseball a distance of 20 meters. My answer: W
2. You lift a suitcase to put in the overhead luggage compartment of a plane. My answer: N
3. You push against a brick wall until you are exhausted. My answer: N
4. You carry a heavy bag of cat litter home from the pet store. My answer: W
5. You slam a tennis ball across the net and score the winning point. My answer: N
6. You study all night for a science test. My answer: N
7. Your finger pushes down the RETURN key on a computer. My answer: N
8. You move a shovelful of snow from the driveway to the lawn. My answer: N
9. You and a friend push a heavy piano, causing it to move 10 centimeters. My answer: W
10. You stand for half an hour in the freezing cold waiting on the bus. My answer: N
I assume you are referring to the physics definition of work.
1. W
2. W
3. N
4. W
5. W
6. N
7. W
8. W
9. W
10. N
In physics, a force is said to do work when it acts on a body, and there is a displacement of the point of application in the direction of the force. For example, when you lift a suitcase from the floor, the work done on the suitcase is the force it takes to lift it (its weight) times the height that it is lifted.
Thank you
To determine whether work is being done or not in each scenario, we need to consider the definition of work in physics. Work is defined as the transfer of energy that occurs when a force is applied to an object, causing the object to move in the direction of the force. Mathematically, work is calculated by multiplying the force applied to an object by the distance over which the object moves.
1. You throw a baseball a distance of 20 meters.
In this case, work is being done because you applied a force to the baseball by throwing it, causing it to move in the direction of the force. Therefore, the answer is W.
2. You lift a suitcase to put in the overhead luggage compartment of a plane.
In this case, work is not being done because although you are applying a force to lift the suitcase, the suitcase does not actually move a distance in the direction of the force. Therefore, the answer is N.
3. You push against a brick wall until you are exhausted.
In this case, work is not being done because although you are applying a force to the wall, the wall does not move at all. Therefore, the answer is N.
4. You carry a heavy bag of cat litter home from the pet store.
In this case, work is being done because you are applying a force to the bag of cat litter, causing it to move a distance in the direction of the force. Therefore, the answer is W.
5. You slam a tennis ball across the net and score the winning point.
In this case, work is not being done because although you are applying a force to the tennis ball, the ball does not actually move a distance in the direction of the force. Therefore, the answer is N.
6. You study all night for a science test.
In this case, work is not being done in the physics sense, as there is no force being applied to an object to make it move. Therefore, the answer is N.
7. Your finger pushes down the RETURN key on a computer.
In this case, work is not being done because although you are applying a force to the key, the key does not actually move a distance in the direction of the force. Therefore, the answer is N.
8. You move a shovelful of snow from the driveway to the lawn.
In this case, work is not being done because although you are applying a force to the snow, the snow does not actually move a distance in the direction of the force. Therefore, the answer is N.
9. You and a friend push a heavy piano, causing it to move 10 centimeters.
In this case, work is being done because you and your friend are applying a force to the piano, causing it to move a distance in the direction of the force. Therefore, the answer is W.
10. You stand for half an hour in the freezing cold waiting for the bus.
In this case, work is not being done because although you are enduring a force (gravity) and staying in a particular position, there is no movement of an object in the direction of the force. Therefore, the answer is N.