Force, which causes acceleration
force
force
To make an object move, a force is required. To change the direction of an object's motion, a different force must be applied in the desired direction. To stop the motion of an object, a force opposite to its direction of motion, known as a braking force, can be applied.
A force.
An outside force to act on it
To change the speed of an object, you need to apply a force to it. The magnitude of the force and the direction in which it is applied will determine how the speed changes. If the force is in the same direction as the motion, the object will accelerate; if the force opposes the motion, the object will decelerate.
A net force from something outside of the system.
A change in speed or direction of motion is called "acceleration". If an object's speed or direction of motion changes, then the object is "accelerated".
An outside force to act on it
A force must be applied to an object in order to change its direction. By exerting a force at an angle to the object's initial direction of motion, the object will change its path and move in a different direction.
Velocity is a change in an object's motion OR direction of motion.
it is speed of motion and direction of motion