Gravitational force and frictional force are the two forces operating on the rocket as soon as it leaves the launch pad. The gravitational force is directed downwards towards the earth, whereas the frictional force is directed upwards owing to the surrounding air. These forces have to be combated to make the rocket launch into the sky. For a detailed explanation on types of forces and their working, visit Vedantu to get the NCERT solutions prepared by experts available for free. Vedantu also offers solutions in Hindi, for the convenience of Hindi Medium School students.