a jumbo starting from rest needs to atain a speed of 350km/h on the runway to take off. can ths plane use a runway 1km long if it is to accelerate at the rate of 2.67m/s2?
2007-10-03 02:12:03 · 2 answers · asked by cara 2 in Science & Mathematics ➔ Physics
350 km/h = 350 * 1000 / 3600 = 97.22 m/s.
At 2.67 m/s^2, it will take 97.22 / 2.67 = 36.41 seconds to accelerate to 97.22 m/s, or 350 km/hr.
The distance traveled is (a * t^2)/2, or (2.67 * 36.41 ^ 2) / 2 = (2.67 * 1326) / 2 = 3540 / 2 = 1770 m = 1.77 km.
So, 1 km is definitely too short to permit that aircraft to reach that takeoff speed, you'd need a 1.77 km-long runway at the very least.
2007-10-03 02:26:12 · answer #1 · answered by El Jefe 7 · 0⤊ 0⤋
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2016-12-28 12:34:22 · answer #2 · answered by ? 4 · 0⤊ 0⤋