True or false (Each question carries 1 marks)

(i) A rigid body is an idealization of the behavior of a body.
(ii) A Geo-stationary satellite follows a circular orbit at a unique and has a time period of 24h.
(iii) Constancy of areal velocity for a central force motion of a particle does not imply that the angular momentum is conserved.
(iv) Every planet moves in an orbit which is an ellipse with the sun at one focus.
(v) For perfectly elastic central impact the two bodies must move stuck together only if the impact is direct.

1 t

2 t
3 f
4 t
5 f