I wish 4 ur success Complete Mole Concept : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-hJgrc-GSFCI.html Kepler's 2nd Law || Gravitation || Class 9 : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5qKrN5jXK-o.html Derivation of all 3 equations of motion : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KKVNdinBfTI.html