kinematics
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This document defines and compares key concepts in motion including length, time, speed, velocity, and acceleration. Length is defined as distance traveled, while displacement refers to distance from the starting point. Speed is distance covered per unit of time and average speed is total distance divided by total time. Velocity also considers direction and is defined as displacement over time. Acceleration is the rate of change of velocity calculated as the change in velocity over time.
kinematics
- 1. length distance: how far the object has traveled SI Unit: metres (m) displacement: how far an object is from the starting point time speed: distance covered per unit time SI Unit: m/ s speed = distance / time average speed = total distance / total time velocity: distance traveled per unit time in a stated direction velocity = displacement / time acceleration: rate of change of velocity a = (v - u) / t SI unit: m/ s^2 acceleration due to gravity g = 10 m/s^2 distance time graph displacement time graph speed time graph velocity time graph