Acceleration
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This document discusses acceleration and how it relates to changing an object's motion. It defines acceleration as the rate at which velocity is changing, measured in m/s^2, and can refer to speeding up or slowing down. Acceleration can be determined from a velocity-time graph by calculating the slope, with a straight line indicating constant acceleration and a curved line indicating varying acceleration over time.
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Acceleration
- 1. Acceleration
- 2. I. Changing an object’s motion Your trip to school each morning requires that you change motion. You do not travel in a straight line at a constant speed There are three ways to change an object’s motion Change speed Change direction Or both What parts of a car can change an object’s motion??
- 3. II. Changing velocity The rate at which the velocity is changing is called acceleration . Acceleration is basically how much you speed up or slow down in a given amount of time Acceleration is measured in m/s 2 Acceleration is not just for speeding up, but also for slowing down. This is often called deceleration or negative acceleration
- 4. III. Velocity-time graph Acceleration can be found from a v-t graph just like we found velocity from a d-t graph. By finding the slope of the line you can find the acceleration, or change in speed, of an object. If the v-t graph has a straight line, then the acceleration is constant. If the v-t graph has a curved line, then the acceleration is not constant.
- 5. IV. D-t AND v-t graphs See examples on the board.