AN aircraft of mass 1200 kg starts from rest and accelerates along a straight horizontal runway.The aircraft engine produces a constant thrust of 3400 N. A constant frictional force of 400 N acts on the aircraft. Calculate the acceleration of the aircraft.
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use f=ma and force actually applied is the resultant force
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a= thrust-frictional force/mass =3400-400/1200=2.5m/s^2
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