This document discusses projectile motion and objects under the influence of gravity. It explains that objects dropped or launched with both horizontal and vertical components will follow a parabolic trajectory due to Earth's gravity accelerating objects at 9.81 m/s2. Objects dropped from the same height will hit the ground at the same time regardless of mass when ignoring air resistance. Projectile motion problems can be solved using kinematic equations, considering the horizontal and vertical motion separately.

1. Projectile MotionFalling things, and rockets ‘n’ that…

2. Projectile MotionThis involves any objects under the influence of gravity.Objects which are dropped (not travelling horizontally) and Objects which are launched (with a horizontal component).

3. Objects Under the Influence of Gravity:Everything close to the Earth’s surface is accelerating towards the Earth at a rate of 9.81 𝑚𝑠¯2 due to gravity.

4. This means in problems involving falling we can always use a=𝟗.𝟖𝟏 𝒎𝒔¯²in kinematic equations.

5. For every kg of mass an object experiences a weight force of 9.81 Newtons (N)

6. Given by: W=mg Where W is weight