The horizontal velocity was constant, so:
it traveled 90meters
Explanation:
direction of electric field is same as that of force experienced by the test charge
You would be correct.
Because you have only JUST released the arrow, and how close he is to the target, it would have the same amount of energy when it strikes the target. Yes, the kinetic energy would be destroyed when you hit the target but not right away. And yes, the potential energy would also be destroyed once you release the arrow, but it goes straight back once it stops moving, aka when it hits the target, although it has only just stopped moving.
Hope this helps!
It confirmed medeleeve's hypothesis (prediction) and showed the use of his table
