Plane Curvilinear Motion: x-y Coordinates - Conceptual Example 3.1-2

 

In the following situations, determine whether the speed or velocity is changing, both are changing, or neither is changing. A car’s cruise control is set to a constant 50 mph and …

 

• the car is driving on a level straight-away.            

 

• the car rounds a curve.           

 

• the car drives over a hill.           

 

• the car is driving up a hill of constant grade.           

 

• the car is driving on a level straight-away when the driver applies the brakes.