Two spheres and B " id="MathJax-Element-149-Frame" role="presentation" style="position: relative;" tabindex="0"> B " id="MathJax-Element-18-Frame" role="presentation" style="position: relative;" tabindex="0">
collide elastically in two-dimensional space. Sphere " id="MathJax-Element-150-Frame" role="presentation" style="position: relative;" tabindex="0"> " id="MathJax-Element-19-Frame" role="presentation" style="position: relative;" tabindex="0">
has a mass of and an initial velocity of (, while sphere B " id="MathJax-Element-151-Frame" role="presentation" style="position: relative;" tabindex="0"> B " id="MathJax-Element-20-Frame" role="presentation" style="position: relative;" tabindex="0">
has a mass of " id="MathJax-Element-152-Frame" role="presentation" style="position: relative;" tabindex="0"> " id="MathJax-Element-21-Frame" role="presentation" style="position: relative;" tabindex="0">
and is initially at rest. The collision occurs along a line of impact defined by the vector \(\hat{n} ={ \hat{i} + \hat{j} \over \sqrt 2}\). Calculate the final speed of A after collision to the nearest integer.
Enter numerical value using the virtual keypad. Round off where necessary.