(@) A telescope is used to observe a satellite (called\"A\") with mass 250 kg that is travelling around the earth in a circular orbit with a velocity of 9.0kms1. (1) A 2nd satellite (\"B\") is travelling in a circular orbit with double the radius of satellite A's orbit. Calculate the ratio between the orbit periods of satellite A and satellite B. (11) Define a perfectly elastic collision. (1i1) Satellite A collides head on (i.e. in the direction of travel) with a stationary piece of space junk with mass m;,n,. Based on conservation laws, write down two separate equations relating the velocity of the satellite after the collision to the velocity of the space junk after the collision. Define the symbols in your equations. (1v) Write down one expression for the impulse applied to the space junk in the collision. Note that there are several different valid expressions that you could give here. Define the symbols in your EXPression