Question

a car which was moving with 20m/s velocity came to rest. in 5s by applying breaks. calculate it's acceleration.​

Answer 1

$u = 20m {s}^{ - 1} \\ v = 0 \\ t = 5s \\ a \: = \frac{v - u}{t} \\ a = \frac{0 - 20}{5} \\ a = \frac{ - 20}{5} \\ a = - 4m {s}^{ - 1}$

$\huge \color{pink}\bigstar \color{pink} \mathfrak{thnq} \bigstar$