Which projectiles will be visibly affected by air resistance when they fall? balloon, leaf, brick or rock?

LEAF

BALLOON

Explanation:

Air resistance depends on different factors

few of the factors are

1. speed or velocity of object

2. surface area of the object

3. density of object

So here we will notice the effect of air resistance in those type of objects very easily which have less density or which are light enough.

Also the surface area must be good enough

If above two conditions are given then air resistance will be more and the object will go slow due to air resistance.

current flows in a wire

f=ma newton

f=100x2.5=250n