Oh, dude, let me break it down for you. So, to find the speed, you just divide the distance by the time taken, like basic math stuff. So, 395,000 meters divided by 9000 seconds gives you a speed of 43.89 meters per second. Boom, there you have it!
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43.889 m / s.
Speed = 395 / 9. Speed = 43.889 m / s
You travelled at an average speed of 2 metres per second.
The plane travels at 2,526.64 miles per hour.
The first step is to find out how long the airplane took before takeoff. If it travels at a uniform 2.45ms-2 acceleration and needs to get to 70ms-1 then this will take 70/2.45 = 28.57142857... seconds. The next step is to calculate the average speed. The plane starts at 0 and ends at 70, so the average speed will be 35ms-1. To find the distance travelled, we multiply the average speed (35) by the time taken (28.57142857...) and this gives 1,000. Thus, the plane travels for 1km before takeoff.
30 seconds
The resultant velocity of a plane is 125 km/hr.