# Science Reasoning Center - Projectiles

There are three Projectiles passages that target students' science reasoning abilities. They are ...
Up and Down
8 Questions
This passage describes a demonstration in which a ball is launched upward from a cart moving at a constant speed. The motion of the ball is analyzed using video analysis and the results are presented in the form of a position (both x- and y-) vs. time graph and a velocity vector diagram. Questions target a student's ability to read, interpret, and interpolate from a graph, to formulate models that are consistent with data, and to translate information from one representation to another representation (e.g, from a diagram to a graph, and vice versa).
Maximum Range of a Projectile
10 Questions
This passage uses Excel-generated plots to describe the trajectory of a projectile, to compare the trajectories for three different launch angles, and to show the effect of launch angle upon range for three different launch speeds. Questions target a student's ability to read graphical information, to interpolate from graphs, to recognize the effect of one variable on another variable, and to use information presented in graphs to answer related questions.
Juggling
12 Questions
This passage describes the trajectory of a rotating juggling club moving through the air. The trajectory of three points on the club are presented in the form of a position (both x- and y-) versus time graph. Questions target a student's ability to select information from a complex graph and to use graphical information to make conclusions regarding the club's orientation and the relative position and rotational direction of various points on the club.
On the Resource CD:
A Resource CD is being prepared to assist classroom teachers in using this section of the website more effectively within their classrooms. The Physics Classroom hopes to release the CD during the Fall semester of of 2014.

The Projectiles section of the CD will include seven different passages, including these three passages. The passages are accompanied by questions, answers with thorough explanations, and a table that associates each question with a specific science reasoning skill (or college readiness standard). Each passage includes considerably more questions than those presented here in the Science Reasoning Center. In addition to PDF files, the information on the CD is also available as Microsoft Word files, allowing teachers the ability to pick and choose questions from the large bank of questions associated with each passage.