anyone know how to contact...everytime i try to use the contact page with the email and username it says in red writing sorry ur request cannot be submitted multiple times and on that page i cant click on my profile or anything else, it wont go through and I swear they r doing it on purpose. Im mad because i tried to sign up but then the payment didn't go through cause there was a card error or something and a screen popped up that said there was an error in red writing it is was denied so i thought i wasn't getting the subscription and i wasn't getting charged..and here i am getting charged 24 dollars for something I am not gonna used like...i want a refund

OMG

Explanation:

SAME THING HAPPENED TO ME! I KNOW THEY DO IT JUST TO BE IRRITATING. ITS VERY ANNOYING!

im very mad...but ya know what would make me happy?

getting brainliest?

b false

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied