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An aeroplane accelerates down a runway at 4 m/sec2 for 30 seconds until it finally lifts of the ground. Find the distance travelled before take off. |
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Answer» Given, the initial velocity = 0 m/s acceleration = 4 m/s2 time = 30 s According to laws of motion. S = ut + 1/2 at2 S = 1/2 at2 S = 1/2 (4)(30)2 S = 1/2 x 4 x 30 x 30 s = 3600/2 m S = 1800 m The distance traveled before takeoff is 1800 m. |
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