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course PHY 201
3/2/about 3 pm
Physics I Assignment 07: Move the dot straight from the left of the screen to the right, taking a few seconds to complete the motion. Which vector represents the velocity, and which represents the acceleration? When is the acceleration vector longest? When is the velocity vector longest? When do the vectors have the same direction, and when are their directions opposite?When moving uniformly, the green vector is representing velocity and the blue vector is acceleration and both point in the direction of motion, with the green vector being larger. As the dot comes to a stop, the blue vector gets bigger and points in the opposite direction.
Repeat but move the dot as quickly as possible from left to right. Describe the behaviors of the two vectors.
They act the same as previous, but are much larger.
Now start in the upper left-hand corner, moving at first to the right, but as you continue to move to the right gradually begin arcing downwards so that you follow a graceful (?) curve from upper right to lower left. Describe the behavior of the velocity and acceleration vectors.
As you begin arcing downward, the acceleration vector begins pointing more downward than the velocity, as it remains in the direction of motion.
Now move the dot around a circular path. Follow a slow circular path, then try to double your speed along the same path. How does the direction of the acceleration vector compare with that of the velocity vector? If you double the speed, then what happens to the magnitudes of the velocity vector and the acceleration vector?
The velocity vector remains in the direction of travel but the acceleration vector is point in towards the center of the circle. Moving slowly, the velocity vector is much bigger. As you increase speed, there appears to be a point when the acceleration vector becomes bigger.
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