Accelerate it.
Be aware that any change in motion (slower, faster, different course) is defined as acceleration.
Newton defined force (simply) as that which alters a state of motion, i.e. f = ma.
Friction is the force that opposes motion between two objects.
Gravity exerts a force on objects; forces change the motion of objects.
The main forces that act on objects in motion are gravitational force, frictional force, and air resistance. Gravitational force pulls objects towards the center of the Earth, while frictional force resists the motion of objects against surfaces, and air resistance opposes the motion of objects moving through the air.
The force that opposes motion when moving objects over a surface is called friction
Friction
The electric force between objects that are not in motion is called the electrostatic force. This force is responsible for the attraction or repulsion between charged objects that are at rest relative to each other.
unbalanced force(:
a pulley
unbalance force
The force that opposes motion when moving objects over a surface is called friction
Centrifugal force is a force that pushes objects in motion away from the center of rotation. It results from the inertia of an object moving in a curved path.
More than a force, it really is the law in which objects in motion stay in motion and objects at rest stay at rest.