P = \frac{A}{t} = \frac{196 J}{2 s} = 98 W \approx \underline{\underline{100 W}}

${P = \frac{A}{t} = \frac{196\, \text J}{2\, \text s} = 98\, \text W \approx \underline{\underline{100\, \text W}}}$

Error