Find the minimum number of weights needed for weighing any integral load not exceeding 63 lbs. On a balance scale. Give the weight of each weight used. (The weight is always placed on one pan of the balance and the load on the other pan.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

30

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times by times

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