Chapter 3 Motion In A Straight Line
Motion along a straight line is also called rectilinear motion.
Average velocity: Average velocity is defined as the change in the position or displacement divided the time intervals in which the displacement occurs.
Average speed: Average speed is defined as the total path length travelled divided by the total time interval during which the motion has taken place.
Instantaneous velocity: The velocity at an instant is known as instantaneous velocity and is defined by the limit of the average velocity as the time interval ∆t becomes infinitesimally small.
Acceleration: The average acceleration over a time interval is defined as the change of velocity divided by the time interval.
KINEMATIC EQUATIONS FOR UNIFORMLY ACCELERATED MOTION
- v = v0 + at
- x = v0t + at2
- v2 = v02 + 2ax