|
| Figure 8.34
Gravity causes projectiles to move in a parabolic path
that is symmetric about the apex |
| |
|
| Figure 8.35
Gravity accelerates objects in a vertical direction and
is represented by the letter ‘g’.
When an object is projected upwards g is negative
and when projected downwards g is positive |
| |
|
| Figure 8.36
Vertical velocity changes linearly with time. When objects
are projected upwards they eventually start to decelerate
until they reach maximum height where v = 0 at
time t. The object returns to earth by accelerating
downwards |
| |
|
| Figure 8.37
Gravity has no influence on horizontal velocity |
| |
|
|
| Figure 8.38
Flight path of a diver |
| |
|
| Figure 8.39
Major influences on projectile trajectory |
| |
|
| Figure 8.40
The effects of various projection angles on trajectory,
where projection speed and height remain constant |
| |
|
| Figure 8.41
Effect of projection speed on object trajectory where
the projection angle = 45 degrees and projection height
= 0 |
| |
|
| Figure 8.42
The effect of relative projection height on object trajectory
where v = 10 m/s and projection angle = 45 degrees |
| |
|
| Figure 8.43
Trade-offs between factors make it possible to achieve
the same height or distance with different combinations
of projection speed, angle and height |
| |
|
| Figure 8.44
Resolution of projectile velocities |
| |
|
| Figure 8.46
Considerations of projection angle for maximal distance
or range |
