2. What is a projectile?
Is an object launched into air or free space
and allowed to move freely by itself under
influence of gravity and air resistance.
3. Useful parameters
Time of flight: Time taken for a projectile to
return the same level from which it was
projected
Maximum height: Highest vertical distance
reached from the horizontal plane of
projection
Range: Horizontal distance from point of
projection to the point where the projectile
hits the projection plane again.
4. U = initial vel; θ = angle of projectile
θ
Max height
U y
Range
5. Formulae
Time taken to reach maximum height = t = Usinθ/g
Maximum height H= U2sin2θ/2g
Range = U2sin2θ/g
Maximum range Rmax = U2/g
Resolving horizontal components using fundamental
equations
The y vertical component y = ut sinθ – ½ gt2
The x horizontal component x = ut cosθ
