A heavy ball is released at the origin, and moves at a constant velocity on a horizontal floor along the dashed line shown below.
Question 1A: Is this projectile motion? Explain your answer.
Describe precisely in words, in the spaces below, the graphs of the corresponding x and y components of the position, velocity, and acceleration of the ball as functions of time.
Question 1B: x-position:
Question 1C: x-velocity:
Question 1D: y-position:
Question 1E: y-velocity:
Question 1F: x-acceleration:
Question 1G: y-acceleration:
The ball in Question 1 begins at rest at the origin. It is tapped repeatedly by two students using batons. They alternate tapping in the x and y directions. (Note: These taps provide approximately constant forces in the x and y directions.) The ball follows the same dashed path as the ball that rolls freely on the floor.
Question 2A: According to the definition of projectile motion, is the tapped ball undergoing projectile motion? Why or why not?
Describe precisely in words, in the spaces below, the graphs of the corresponding x and y components of the position, velocity, and acceleration of the ball as functions of time.
Question 2B: x-position:
Question 2C: x-velocity:
Question 2D: y-position:
Question 2E: y-velocity:
Question 2F: x-acceleration:
Question 2G: y-acceleration:
A pitcher throws a baseball. She releases it so that it is initially moving in the horizontal direction, as shown in the figure that follows.
Question 3A: Is the motion of the ball after it leaves her hand projectile motion? Explain.
Assuming that air resistance is negligible, describe precisely in words, in the spaces below, the graphs of the corresponding x and y components of the position, velocity, and acceleration of the ball as functions of time. (Assume that the origin of the coordinate system is at the point she releases the ball.)
Question 3B: x-position:
Question 3C: x-velocity:
Question 3D: y-position:
Question 3E: y-velocity:
Question 3F: x-acceleration:
Question 3G: y-acceleration:
Question 4: A ball is moving through the air. The data in the table that follows are either the x or y position coordinates of the ball as a function of time. (The positive y axis is upward.) Use these data to find velocities as a function of time, and determine from the velocities whether these data are x or y coordinates. Be sure to explain thoroughly how you reached your conclusion. (You may wish to plot a graph.)
Suppose a rocket in outer space is thrust along the y direction with an acceleration of 15 m/s2 while moving freely (no applied force) in the x direction.
Question 5A: Describe the path followed by the rocket.
Question 5B: Is the motion similar to projectile motion? Explain.
Please remember to edit the report (insert your name - and if necessary your partners), export the report and submit it on D2L.