Chapter+1+-+KINEMATICS

Chapter 1 - KINEMATICS = =

A projectile has a single force that acts upon it - the force of gravity. If there were any other force acting upon an object, then that object would not be a projectile. Problems involving projectiles can be solved by considering the vertical and horizontal motions separately. Since the acceleration is entirely vertical the projectile has no acceleration horizontally and so its horizontal velocity is unchanged throughout the motion. When solving projectile problems suvat equations are used.

Acceleration of moving praticle is not always constant there for calculus must be used to find the velocity and the displacement of the particle. if a particle is moving in a straight line and the displacement is measured from a fixed point on that line is given by x=f(t) to find the velocity you differentiate x with respect to t because velocity is the rate of change of displacement with respect to time. To then get the acceleration from velocity you differentiate with respect to time again. If a particle is travelling in a straight line and the acceleration //a// ms-2 is given by a function of time :- a=f(t) to get velocity you integrate a, then integrate again to get displacement ( remember to include constants) 