This document discusses projectile motion. It defines a projectile as any object that is thrown or dropped and is only influenced by gravity. Projectiles have both horizontal and vertical motion, but these motions are independent. Projectiles launched horizontally have no initial vertical velocity and only experience downward acceleration due to gravity. The motion of horizontally launched projectiles can be modeled using the uniformly accelerated motion equations for the horizontal and vertical components separately.

2. GRADE 9 EARTH

3. The curve naturally happens
when an object, moves in two
dimensions – having both
horizontal and vertical motion
components, acted by gravity
only.

4. • Understanding the Physics of projectiles helps
players enhance their game skills and
experience.
• Projectile motion can happen in two situations
– projectiles launched horizontally and
projectiles launched at an angle. This module
will describe the motion of projectiles
launched horizontally.

5. An object dropped from
rest is a projectile
And an object which is thrown
upward at an angle to the
horizontal is also a projectile
An object that is
thrown vertically
upward is also a
projectile

6. • A projectile is any object that once projected or
dropped continues in motion and is influenced
only by the downward force of gravity.
• A projectile has a single force that acts
upon it - the force of gravity.

7. • A projectile launched horizontally has no initial
vertical velocity (vix = 0).
• Projectiles are only acted upon by gravity.
• Therefore projectiles launched horizontally
only have downward acceleration (ay), which
is equivalent to -9.8 m/s2 and has no
horizontal acceleration (ax = 0).

10. Projectiles have horizontal (x) and vertical (y)
components that are independent of each other.
Thus, we will recreate the Uniformly Accelerated
Motion Formulae according to the horizontal and
vertical components of a projectile.

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