Question

Help please, I don’t understand

Answer 1

v = 16.155 m/s

Explanation:

`W = 0.5 mv^2 \\ plug \: m = 6 \: and \: w = 783 \\ 783 = 0.5 * 6 * {v}^(2) \\ 783 = 3 {v}^(2) \\ {v}^(2) = (783)/(3) \\ {v}^(2) = 261 \\ v = √(261) \\ v = 16.1554944 \\ \huge \red{ \boxed{v = 16.155 \: m {s}^( - 1) }} \\`