How to do this a young vandal wishes to hit a truck traveling at a constant speed of 20m/s with a water balloon. if the vandal is in a tree, 40 m from the top of the truck, how far should the truck be from the tree when she releases the balloon so that it hits the truck when it is at a position directly beneath her?

6.89 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

The water balloon will take 2.9 seconds to hit the tree

As, the truck is moving at a constant speed of 20 m/s it does not have acceleration

The boy has to release the balloon when the truck is 6.89 m away

tube or goog will be great resources to find the answer to the question that you're asking

it doesn't. it was imagined up in the middle ages.