Answer:
to convert a speed from mph to ft/s we need to multiply it by 5280 then divide by 3600
90 mph*5280/3600 =132 ft/sec
A standard door measures 3-ft-wide and 7-ft-height. If 15-mph wind is blowing against a closed door that opens outward, estimate the force (in lbs) required to start opening the door. Assume that the air pressure on the inside if the door is equal to the local atmospheric pressure, that the air temperature is 60 °F, and that the door handle is 3 ft from the hinge line.
An airliner flying at 600 mph hits a 480 g duck that is 1 ft long. Estimate what average force the airliner experiences from this collision. 1 mi = 1609 m, 1 m = 3.28 ft, so the collision occurs while the airliner travels 1 ft. (Since you only know the mass of the duck, you must isolate it and find the force on it. Then use the 3rd law to relate that force to that experienced by the airliner....
A person in a hurry averages 90 MPH on a trip covering a distance of 600 miles. What time was required to travel that distance? The time required to travel 600 miles with an average speed of 90 MPH is ____ hours.
TRICKY QUESTION! THE ANSWER IS NOT 90 MPH! HELP PLEASE! You are wanting to average 60 mph on a 60 mile trip. You cover the first 30 miles at an average speed of 30 mph. What speed do you need to go for the next 30 miles to average 60 mph? 4.4 pts, 110% # tries: 0 | Show Details F. 1. 60 mph 2. 90 mph 3. 120 mph 4. Infinity 25% try penalty Hints: 0,0
Use 1mi = 5280 ft and 1 h = 3600 s to convert 60 mph to units of ft/s. Express your answer using two significant figures.
When an airplane is flying 200 mph at 5000-ft altitude in a standard atmosphere, the air velocity at a certain point on the wing is 273 mph relative to the airplane. Please provide the gage pressure (units of lb per square feet) at the location on the wing where the wind speed (from the perspective of the wind) is 273 mph. Provide your answer with two significant figures.
The minimum distance required to stop a car moving at 35.0 mph is 40.0 ft. What is the minimum distance, in meters, for the same car moving at a speed of 70.0 mph assuming it has the same constant acceleration? Find your acceleration in units of m / s^2 first.
A Piper Cherokee is flying at 4000 ft standard altitude at 105 mph. The wing has a rectangular planform (shape) with a span of 30 ft and a chord of 5.33 ft. Assuming that the turbulent boundary layer grows as on a smooth plate and a completely turbulent boundary layer flow, determine: (a) The boundary layer thickness at the downstream edge of the wing. (b) The total skin friction drag coefficient of the wing. (c) The total skin friction drag...
conversion in scientific form or decimal form. not both. please show work or explain so I will know how to do this. 7) 90 mph = ? ft 8) 4608 in2 =?ft2 9130 gal ? ft3 US to US US to SI 10) 10.0 L ? gal 11) 442 in3-7l
Distance(d)=90 miles each way On the way there v1= 60 mph On the way back v2 = 30 mph How long did the round trip take?