An athlete executing a long jump leaves the ground at a 27.1o angle and travels
ID: 2169872 • Letter: A
Question
An athlete executing a long jump leaves the ground at a 27.1o angle and travels a horizontal distance 7.33m. What was the take-off speed?Okay ive spent an hour trying to plug it in to the equation Vo=sqrt of Rg/sin2beta like all of the tohger anawers say and I am not getting the right answer. I understand the equation used butI keep doing something wrong with my math because I cant get any of the other answers right either that other people asked. Please explain the answer and the process of plugging the info in to the equation to get it. Thank you!
Explanation / Answer
I fly a Cessna 172. That's a small single engine plane. The take off speed for that is 60 knots. Everything is measured in the airline world in knots. 60 knots is 69 mph. Here is a list of major airliners that fly around people all day and their recommended take off speeds. They are not always exact. Weather conditions and how heavy the plane is with bags, people, and fuel will always play a part in the final take off speed. Also how fast is the wind blowing. A strong headwind will always reduce the "ground speed" needed to take off and the distance needed as well. Even though you are at a lower ground speed, your wings still have a minimum take off speed passing over them becuase the headwind is making up for the lack of thurst. Anyways, here is the list of planes: Boeing 737: 150 MPH / 130 Knots Boeing 757: 160 MPH / 140 Knots Airbus A320: 170 MPH / 150 Knots Airbus A340: 180 MPH / 155 Knots Boeing 747: 180 MPH / 155 Knots Concorde: 225 MPH / 195 Knots Remember that this speed is a minimum to get the wheels off of the ground. The plane will continue to accelerate up to over 500 Knots or 600 mph when it gets to its cruising altitude. Also, remember that landing speeds are a little less than the take off speed. The landing speed is normally about 5 knots lower because if they were the same speed, then the plane would generate lift and the object is to acutally land on the ground.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.