87 mph = 127.6 feet per second.
A stock Yamaha TTR250 with 14/44 gearing can reach a top speed of 87mph or 143kph.
Well I've had 87mph out of mine in the past, but it has dropped since then to just 72mph
39 mph
Just under 23 hours - assuming you're travelling at a constant speed.
That's the formula for the height of an object that was tossed upward at a speed of 40 meters per second, after ' t ' seconds . This object has to be something like a canonball, or a baseball pitched by a professional etc. The initial vertical speed of 40 meters per second is almost 90 miles per hour upward !
Speed(74) = 72.2Speed(50) = 44.7
Since speed is distance/time, 60ft/0.5sec is a speed. 120ft/sec is a little easier on the eyes though.
A baseball is pitched at 150km/ph and a golf ball is hit at about 220km/ph, John Dally can hit it 280km/ph
Speed(74) = 72.2Speed(50) = 44.7
103 mph is equal to:0.028 miles per second151.07 feet per second
75 mph to 80 mph is the top speed of Yamaha ttr 250. This is true however you could increase or decrease your top speed by changing sprocket sizes, e.g A stock yamaha ttr250 with 14/44 gearing will reach approximately 140km/h or 87mph. Note i own a Yamaha TTR250 and have tested the bikes top speed.