How many of these are examples of collisions, assuming they occur over a short period of time?

A giraffe chewing a leaf.
A dog scratching on the door.
A log burning.
(1 point)
• A giraffe chewing a leaf.
A giraffe chewing a leaf.
A dog scratching on the door.
• None of these are examples of a collision.
A giraffe chewing a leaf.
• A dog scratching on the door.
A log burning.

None of these examples are collisions. A collision typically involves two or more objects coming into contact or colliding with each other, resulting in a transfer of energy or change in motion. In the given examples, there is no interaction or collision between objects.