EXERCISE 3 | FREE FALL AND PROJECTILE MOTION

Displacement

the change in the initial and final position. (independent of path taken. Do not confuse with distance covered)

Velocity

defined as the change in position over change in time. The expression for the

average ***** is given by

Acceleration

is defined as the change in velocity over change in time.

uniformly accelerated rectilinear motion (UARM) 3 types

Projectile

- any body that is given an initial velocity and then follows a path determined entirely by

the effects of gravitational acceleration.

trajectory

- the path of a projectile is called its *****.

Free falling bodies are

objects that are falling under the influence of the Earth’s

gravitational attraction

Motion along x-axis

can be derived from the fact that the acceleration along the

x-axis is zero. From the kinematic equations, we can derive the following

expression by setting .

Motion along y-axis

can be derived by setting , i.e., there is a constant

vertical acceleration along the y-axis