Quote by learningphysics
I believe the 5m should be along the dashed 45 degree line... Use the cosine law to calculate the length of the two sides...
Use the dashed line, 0.1m and the right hypoteneuse triangle... calculate the length of the hypoteneuse...
Then use the dashed line, 0.1m and the left hypoteneuse triangle... calculate the length of the left hypoteneuse...

After doing so, since v=d/t and i want t, i need to flip the velocity, hence making it 1/343