The angular velocity of the engine (and hence of the wheel) of a scooter is proportional to the petrol input per second. The scooter is moving on a frictionless road with uniform velocity. If the petrol input is increased by 10%, the linear velocity of the scooter is increased by
As the road is frictionless, it is impossible to increase the linear velocity until there exist a force in the linear direction. The engine can only increase angular speed.