Define the following terms:
(i) Speed
(ii) Non uniform acceleration
(iii) Acceleration
Answers
- Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.
2 Non-uniform acceleration constitutes the most general description of motion. It refers to variation in the rate of change in velocity. Simply put, it means that acceleration changes during motion. This variation can be expressed either in terms of position (x) or time (t).
3 In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities (in that they have magnitude and direction). The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
Answer:
The rate of change in distance travel per unit time is called speed.
The rate of the change of velocity in per unit time is called non uniform acceleration
The rate of change of velocity is called acceleration