One dimensional kinematics is the study of motion in a straight line, without considering the factors that may affect the motion, such as forces or objects in the way.
The key concepts in one dimensional kinematics include displacement, velocity, acceleration, and time. Displacement is the distance an object has traveled from its starting point. Velocity is the rate of change of displacement over time. Acceleration is the rate of change of velocity over time. Time is the duration of the motion.
One dimensional kinematics is used in many real-life situations, such as calculating the speed and distance of a moving car, predicting the trajectory of a projectile, and understanding the motion of objects in sports like baseball or football.
Average velocity is the total displacement over a given time interval, while instantaneous velocity is the velocity at a specific moment in time. Average velocity can be calculated by dividing the total displacement by the total time, while instantaneous velocity can be calculated by finding the slope of the position-time graph at a specific point.
Acceleration can either speed up or slow down an object's motion in one dimension. If an object has a positive acceleration, it is speeding up, while a negative acceleration will cause the object to slow down. The magnitude of the acceleration also affects the change in velocity over time, with a larger acceleration causing a greater change in velocity in a shorter amount of time.