A concave mirror of radius of coverture 30cm produces an inverted image 3 times the size of the object placed in front of it. Determine the object position, image position and most especially the nature of image​

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

Could someone me find the answer to this problem.

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