Answer:
Positive motivation is when you try to influence people to do something by offering a reward. For example, car advertisements in which they mention the good features about the model and this can have a powerful effect on consumers by making them believe that with the car, they will feel good and have status and a certain lifestyle.
Negative motivation is when you influence people by making them believe that they might have a negative outcome if they don't do something. For example, government advertisements to encourage people to respect traffic regulations by showing the negative consequences of not doing it which creates fear in people.