Question

a car speeds up from 5 m/s to 25 m/s in 1 minute. what is its acceleration in m/s²?

Explanation:

Step1: Identify initial and final velocities and time

Initial velocity $u = 5\ m/s$, final velocity $v=25\ m/s$, time $t = 1\ minute=60\ s$.

Step2: Use acceleration formula

The formula for acceleration $a=\frac{v - u}{t}$. Substitute the values: $a=\frac{25 - 5}{60}$.

Step3: Calculate the acceleration

$a=\frac{20}{60}=\frac{1}{3}\ m/s^{2}\approx0.33\ m/s^{2}$.

Answer:

$\frac{1}{3}\ m/s^{2}$ (or approximately $0.33\ m/s^{2}$)