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A comment on Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-Breaking Speeds. Parent comment

Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by noir_lord on Tuesday February 19, 2019 @04:13PM (#19202847)
It's travelling at 801mph relative to the ground.

If I'm swimming down stream at 1 mph in water moving at 4mph, relative to the bank I'm doing 5mph relative to the water 1mph.

No sonic booms where involved.

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Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by AnimalMuppet on Tuesday February 19, 2019 @04:34PM (#19203053)
I'm quite well aware of that. I'm not sure how you read my post as saying anything different.

boyter asked how anything but time from A to B could be relevant. Well, not damaging the plane is relevant. And therefore the airspeed not being 801 MPH matters.

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