A fast baseball pitcher throws at 100 mph How many Mach is t

A fast baseball pitcher throws at 100 mph. How many Mach is that? New England is known for having Nor\'easters. How would you indicate a North East wind coming at you at approximately 60 mph (convert to knots first). A car goes from 0 to 60 in 3.5 seconds. What is it\'s approximate acceleration in ft/sec**2 if the acceleration is steady?

Solution

A. 1 mach is 761.2 mph. So the speed of the throw is 100/761.2 mach = 0.13 mach.

B. 1mph is = 0.869 knots. So spped of the north east wind is 60*0.869 knots = 52.14 knots.

C. 0 to 60mph in 3.5 sec. So the acceleration is 60/3.5 m/sec2 = 90514 feet/Sec2