Question

A planet is moving in elliptical orbit with sun
at one of the foci. If the eccentricity of the
orbit e = 1/2.
The ratio of the speeds at the
perigee and apogee is

1) 1.2
2) 2.5

Answer 1

Answer:

Explanation

Here's the answer..

We know

velocity at perigee/ velocity at apogee= 1+e/1-e

it is given that e= 1/2= 0.5

now substiute the value on the above equation

Vp/Va= 1+0.5/1-0.5

1.5/0.5

Vp/Va comes out to be 3

Hope this helps...

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