Question

find the value of root 3^-2​

Answer 1

${3}^{ - 2} \\ ( { \frac{1}{3} })^{2} \\ \frac{1}{9}$

Answer 2

if the angle θ is 90 degrees how can the work done by F⃗ on the object is zero. Now consider a force acting on an object, but the object moves in a direction perpendicular to the force