an ap physics problem

Test Preparation AP Sciences
1

<p>A satellite S is in an elliptical orbit around a planet P, as shown above, with r1 and r2 being its closest and farthest distances, respectively, from the center of the planet. If the satellite has a speed v1 at its closest distance, what is its speed at its farthest distance?</p>

<p>a. R1<em>V1/R2 b R2</em>V1/R1 c (R2-R1)*V1 D .5(R1+R2)V1 E V1(R2-R1)/(R1+R2)</p>

2

<p>Conservation of angular momentum.</p>

<p>L1=L2
mv1R1=mv2R2
v2=(V1R1)/R2 = A.</p>

3

<p>Out of curiosity, was this question from a Physics B or C:Mech exam?</p>

4

<p>This is definitely physics C. Angular momentum and other rotational topics don’t appear on physics b.</p>