Chapter 2- Motion Along a Straight Line

Average velocity

A vector quantity with both, a magnitude and direction.

Vector quantity

A quanitity with both, magnitude and direction.

x m

If displacement (________ /s) is plotted against time (t s), a line with a slope /gradient will be obtained which tells the magnitude of the average velocity.

one dimensional motion

In the case where an object moves along a single axis, it is called ________.

curve of v

Graphically, the acceleration at any point is the slope of the ________ (t) at that point.

Free-fall acceleration

The rate at which an object would fall if all the effects of air on it could be ignored.

straight line

The motion is along a(n) ________ only which may be vertical, horizontal or slanted but must be straight.

Displacement

A vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion.

Acceleration

The rate of change of the velocity of an object with respect to time.

Average velocity

The ratio of the change in displacement that occurs during a particular time interval.

One purpose of physics is to study the motion of objects which can be divided into two main categories

how fast an object moves, and how far an object travels in a given time

Average velocity is the ratio of the change in displacement that occurs during a particular time interval, i.e, final

initial velocity/ time taken

This slope connects two points on the graph

one that corresponds to x1 and t1, and another that corresponds x2 and t2

Kinematics

the branch of mechanics concerned with motion without reference to force or mass.