A backhoe is heading towards a building whose height is 320 m at a speed of 40 m / s. How quickly does the angle subtended by the top of the building and the driver's eye grow when the driver is 360 m from the tower?​

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.

What is the number for e if you don't knkw then there is no answer you need that number to plug in then multiply that number with 5.9 then add 10