a force acting on an object in the opposite direction that the object is moving can cause that object 's speed to decrease in a forward motion. A car is driving on a highway trying to get up the the speed limit. However, there are strong winds hitting the windshield of the car. Even though the driver is trying to speed up, the high winds ['flip the car over', 'help the car go faster', "conflict with the driver's goal", 'move the car sideways']