Question 5 A truck accelerates from rest to \( 20 \mathrm{~m} / \mathrm{s} \) in 9 seconds. What is its acceleration? Q

To find the acceleration, you can use the formula \( a = \frac{\Delta v}{\Delta t} \). Here, the change in velocity \( \Delta v \) is \( 20 \mathrm{~m/s} - 0 \mathrm{~m/s} = 20 \mathrm{~m/s} \), and the time interval \( \Delta t \) is \( 9 \text{ seconds} \). So, the acceleration is \( a = \frac{20 \mathrm{~m/s}}{9 \, \text{s}} \approx 2.22 \mathrm{~m/s}^2 \). Acceleration isn't just a dry physics concept; it's about getting from A to B faster! For instance, in sports, understanding acceleration can give competitive athletes insights on how to optimize their starting speed. Coaches often leverage this knowledge for training schedules to boost performance efficiently! Curious about acceleration in daily life? Consider how understanding it can make a difference in vehicle safety features! Innovations like anti-lock braking systems (ABS) and traction control systems (TCS) use principles of acceleration to enhance car safety, allowing drivers to maintain control even under adverse conditions. Exciting, isn't it?