Friction is a contact force that slows down motion. Whenever the surface of an object slides over the surface of another object, each object exerts a frictional force on the other. This is because of the irregularities of the two surfaces. Even if there is no relative...
Circular motion is movement along a circular path or a circular orbit. A body describing a circle is not at rest. It does not move with constant velocity because whether the speed is changing or constant, the direction of the motion continuously changes. From Newton’s...
Newton’s First Law Every object continues in its state of rest or uniform motion in a straight line unless a resultant force acts on it to change its state. This law states that if there is no resultant force acting on an object on rest, the object will remain at...
A force is a push or a pull that one object exerts on another which produces, or tends to produce, stops or tends to stop motion. A force can also change the shape of an object. The SI unit for force is newton (N), with 1N being the approximate amount of force that...
Balanced Forces When two or more forces acting on an object produce no resultant force, we say that the forces are balanced. From Newton’s First Law, we can deduce that the object is either stationary or moving at a constant velocity. Unbalanced Forces If there is a...