[(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An SUV pulls a trailer carrying a boat. The mass of the SUV is 2460 kg and the mass of the boat and trailer is 490 kg. The SUV starts from rest (velocity = 0) and accelerates for 10 seconds to final velocity 12 m/s; i.e., a = 1.2 m/s2.

What is the frictional force exerted by the road on the tires of the SUV?

2. Relevant equations

F=ma

3. The attempt at a solution

so I used

.5mv^2=[itex]\mu[/itex]mgd

d=.5at^2

d=60m

thus [itex]\mu[/itex]=0.1223

so then Ff on the road by the tires =M_suv*0.1223=300.92 N, but this is not correct, where am I going wrong this seems so simple

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Frictional force by tires

**Physics Forums | Science Articles, Homework Help, Discussion**