Here's why:
* Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This means:
* Larger force = larger acceleration
* Larger mass = smaller acceleration
* Acceleration is a change in velocity. This change can be:
* Change in speed: The object speeds up or slows down.
* Change in direction: The object changes its direction of motion.
In simpler terms:
* A net force is like a push or pull that makes an object want to change its motion.
* If the object is already moving, the force will either speed it up, slow it down, or change its direction.
Examples:
* Pushing a box: You apply a force to the box, causing it to accelerate across the floor.
* Throwing a ball: Your throw applies a force to the ball, causing it to accelerate upwards and then downwards due to gravity.
* A car braking: The brakes apply a force, causing the car to decelerate (slow down).
* A planet orbiting a star: The gravitational force between the planet and star causes the planet to constantly change direction, resulting in its orbital motion.
