Centripetal forces can.
all external forces can change the velocity of a body e.g.(gravity,friction etc.)
Balanced forces do not alter the motion of objects.
Speed only tells how fast something is going, while velocity tells speed and direction.
Velocity change can result in changes in an object's speed and/or direction of motion. This change in velocity can be caused by forces such as acceleration, deceleration, or changes in direction, which can affect the object's kinetic energy and momentum.
The study of velocity, speed, and acceleration is called kinematics. Kinematics is a branch of physics that deals with the motion of objects without considering the forces causing the motion.
Velocity
The forces involved in an interaction between two objects include gravity, friction, and applied forces. These forces can affect the motion of the objects by causing them to accelerate, decelerate, or change direction. Gravity pulls objects towards each other, while friction opposes motion. Applied forces, such as pushing or pulling, can change the speed or direction of the objects. Overall, these forces determine how objects move and interact with each other.
Sometimes. If an object is falling, it's position relative to the Earth, will affect its velocity. Between two parallel electric plates, the velocity of an charged oil drop is independent of its position (more or less).
Velocity is a vector which incorporates both speed (a scalar) and direction. So the speed (distance divided by time) must increase if the velocity increases as the direction (an angular measurement) does not affect the absolute value of the vector.
when you know both speed and direction of an objects motion you know the velocity of an object.
If the group of forces on an object is unbalanced, then the object can't have constant velocity. Its speed or the direction of its motion must change.
Force vectors are quantities that have both magnitude and direction, representing the push or pull on an object. They affect the motion of objects by changing their speed, direction, or both. Forces can cause objects to accelerate, decelerate, change direction, or remain at rest.