Acceleration is the change in an object's velocity over time. It can be calculated by dividing the change in velocity by the time taken for that change to occur.
Velocity is the rate of change of an object's position over time, while acceleration is the rate of change of an object's velocity over time. In other words, velocity tells us how fast an object is moving, while acceleration tells us how that speed is changing.
Acceleration can be measured using tools such as accelerometers, which can detect changes in an object's velocity. In addition, acceleration can be calculated using motion equations that take into account an object's initial velocity, final velocity, and time.
Acceleration is a key concept in Newton's laws of motion. The first law states that an object will remain at rest or in motion at a constant velocity unless acted upon by an external force. The second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. The third law states that for every action, there is an equal and opposite reaction, which can result in acceleration.
Some examples of acceleration in everyday life include a car speeding up or slowing down, a rollercoaster going around a loop, a person jumping off a diving board, or a ball being thrown into the air. In each of these scenarios, the object's velocity is changing, resulting in acceleration.