1. The problem is to identify some of the easiest formulas for acceleration and velocity in physics. 2. The key formulas are: - Velocity: $v = \frac{\Delta x}{\Delta t}$ where $\Delta x$ is displacement and $\Delta t$ is time interval. - Acceleration: $a = \frac{\Delta v}{\Delta t}$ where $\Delta v$ is change in velocity and $\Delta t$ is time interval. 3. Important rules: - Velocity is how fast something moves in a direction. - Acceleration is how quickly velocity changes. - Both formulas use changes over time. 4. Example: If a car moves 100 meters in 5 seconds, velocity is $v = \frac{100}{5} = 20$ meters per second. 5. If the velocity changes from 0 to 20 meters per second in 4 seconds, acceleration is $a = \frac{20 - 0}{4} = 5$ meters per second squared. These formulas are simple and fundamental for solving many physics problems involving motion.