The direction of the velocity of an object is always in the direction of the object's motion while the acceleration due to gravity is always directed downwards.
The direction of velocity of an object projected upwards points upwards from the starting position until the object reaches maximum height, from the maximum height the velocity points downwards and this velocity increases until the object hits the ground.
- The object attains maximum velocity before hitting the ground.
- At the maximum height the final velocity of the object is zero
The acceleration due to gravity doesn't always point in the direction of the object's motion, in fact the direction of the acceleration due to gravity is always downwards.
In the given charts we are going to represent the direction of the velocity and acceleration as follows;
Upward direction of the velocity
+v ↑ ↑ ↑ . maximum height
↑ ↑ ↑
↑ ↑
↑
Ground level
downward direction of the velocity is as follows;
-v ↓ ↓ ↓ . maximum height
↓ ↓ ↓
↓ ↓
↓
Ground level
The direction of the acceleration due to gravity is as follows;
↓ -g
↓
↓
↓
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