SOLUTION: if it took vehicle A 114 miles per hour to catch up to vehicle B on a 4 mile stretch. How fast was vehicle B going if both vehicles were 500 feet apart?
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Question 635156: if it took vehicle A 114 miles per hour to catch up to vehicle B on a 4 mile stretch. How fast was vehicle B going if both vehicles were 500 feet apart? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! if it took vehicle A 114 miles per hour to catch up to vehicle B on a 4 mile
stretch.
How fast was vehicle B going if both vehicles were 500 feet apart?
:
let b = vehicle B's speed in ft/sec
:
Find how long for vehicle A to cover 4 miles * 3600 = 126.3 seconds
:
Find how many ft/sec at 114 mph = 167.2 ft/sec
:
A has to overtake vehicle B in 126.3 sec = 126.3
500 = 126.3(167.2-b)
500 = 21117.36 - 126.3b
126.3b = 21117.36 - 500
126.3b = 20617.36
b = 20617.36/126.2
b = 163.24 ft/sec, speed of the car B
Change speed to mph = 111.3 mph speed of B
