The answer to your question is A.
Answer:
question 1: force
question 2: velocity or inertia
question 3: 0
I think the vehicle relation to the hearer is : Past the hearer
Have you ever walk when a motor cycle run past you ? You will notice that you will hear less sound as the motor cycle goes further
Hope this helps
The top of the trajectory is the point where it changes from rising to falling. At that exact instant, its vertical speed is zero.
The correct answer is erosion.