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

A car travels east at 95 km/h for 1.5 hours. It then travels 30.0° east of north at 111 km/h for 1.8 hours.

What is the average velocity for the trip? (Magnitude and degrees)

2. Relevant equations

law of cosines/resultant

3. The attempt at a solution

I have tried doing this:

d=95^{2}+ 111^{2}- 2(85*111)cos60 = 110km

v=110km / 3.3 hr = 33.1 m/s

for the angle...

tanx = Bsinx/ a + bcosx = 111sin60/95+111cos60 = 0.638

x = 32.5 north of east

Both of these were wrong...any help please??

**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: Average velocity problem

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