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Home Concept Builders Newton's Laws Air Resistance and Skydiving Directions

Air Resistance and Skydiving - Directions

Using the Air Resistance and Skydiving Concept Builder is quite simple. There are three different activities and the tasks are different in each activity. In the first activity - Air Resistance - you will be presented with a diagram (at least on three of the four questions) that displays the cross-sectional area and the speed of three different objects. You have to rank the objects according to the amount of air resistance that they encounter. To perform the ranking, simply tap on the field below each object. Doing so will toggle the ranking from "Greatest" to "Middlest" to "Smallest". Continued tapping simply cycles back through the three options. Once you have given a unique ranking to each object, a Check Answers button appears. If you are satisfied with your ranking, then you can tap on the Check Answers button. Feedback is given and your Progress Report is updated.

In the second activity - Vector Diagrams - you will be presented with five different vector diagrams displaying a vector quantity (either velocity, net force, air resistance force, or acceleration) for the falling motion of a skydiver. You have to select the vector diagram that correctly displays how that quantity changes over the course of the skydiver's fall. To view the vector diagram options, you simply tap on the vector diagrams shown on the right side of the question. Tapping will toggle from one option to the next. Once you believe you are viewing the correct option, then tap on the Check Answers button. If you are satisfied with your ranking, then you can tap on the Check Answers button. Feedback is given and your Progress Report is updated.

In the third activity - Velocity-Time Graphs - you will be presented with the velocity-time graph for a falling skydiver. There are five labeled points on the graph, corresponding to different locations during the skydiver's fall. Your task is to describe the relative magnitude of the air resistance force, net force, and acceleration for each of these four locations. In one of the questions you must also identify the free-body diagram for each of the locations. To choice your answers, you simply tap on the answer field. Each time you tap, a new answer option is displayed. Continued tapping cycles through the answer options. Once you have selected a set of unique answers, a Check Answers button is displayed. If you are satisfied with your ranking, then you can tap on the Check Answers button. Feedback is given and your Progress Report is updated.

Concept Builder Teacher Notes