Give reason -
A football starts moving on the ground when a player kicks it with his foot.
Hence A football starts moving on the ground when a player kicks it with his foot due to force provided by footballer
A football player kicks a football to another player of his team who kicks it towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team.
The momentum of football changes:
In the following example, try to identify the number of times the velocity of ball changes:
'A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team.'