A man of height 1.4 meters walk away from a 5-meter lamppost at a speed of 2.9 m/s. Find the rate at which his shadow is increasing in length.

2 answers

1.127 m/s
I agree , except I had 1.127777...
which would round off to 1.128

It will depend on what accuracy you need, or if you are using the concept of significant figures.