Question

please help :)

Answer 1

what two types of frictions resist a freight train that speeds along the railroad tracks at 150 km/hr

Answer 2

@Nnesha

Answer 3

@jim_thompson5910

Answer 4

check this page out

http://www.tutorvista.com/physics/4-types-of-friction

Answer 5

keep in mind that this train is moving, and it's moving very fast

so it's not just starting (there is no way a train can accelerate that fast)

Answer 6

is it kinetic since it's moving idk the second one

Answer 7

thanks :) @jim_thompson5910

Answer 8

no it's actually not kinetic

Answer 9

kinetic is just for when the object is starting to move

Answer 10

ohh then i think its fluid

Answer 11

yeah because the air it encounters slows it down

Answer 12

air is considered a fluid in physics & engineering because the particles move in a fluid-like motion

Answer 13

thanks u soo much wish i could medal u more than once lol

Answer 14

it's fine, I'm glad I could help

Answer 15

:)