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MTALHAHASSAN2
 one year ago
Need help!!
A car skids to a stop on a road with a uk of 1.1. If the intial speed of car is 50 km/h how many meters long are the skid marks.
MTALHAHASSAN2
 one year ago
Need help!! A car skids to a stop on a road with a uk of 1.1. If the intial speed of car is 50 km/h how many meters long are the skid marks.

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2here we have to keep in mind that the work done by the friction force has to be equal to the kinetic energy change, so we can write: \[\Large {\mu _k}mgd = \frac{1}{2}m{v^2}\] where m is the mass of your car, and d is the requested distance. Furthermore g is the earth gravity, and v is the velocity of our car

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435905880197:dw

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435905970542:dw

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435906093552:dw

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0I just covert 50 km/h in m/s

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435906235486:dw

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0Is i do it right

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0you dropped g out of your calculation so you are out by a factor of about 10

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0@IrishBoy123 from which step

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435912438381:dw

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0also, does 89m sound realistic?!

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0Idk i just get that answer

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0ut the answer at the back of my book is 8.64 m [F]

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0i am referring to your answer given above  ie 89m. dw:1435912972594:dw i get \(\frac{50,000^2}{3600^2 \times 2 \times 1.1 \times 9.8} = 8.95m\)

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435912949019:dw

MTALHAHASSAN2
 one year ago
Best ResponseYou've already chosen the best response.0I still don't get the answer
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