1. The problem statement, all variables and given/known data please look at the following statements: 1: due to air resistance, total energy of a satelliit will decrease gradually, dissipated into internal energy. As T.E. = -GMm/2r, r will decrease, hence K.E. increases (K.E.=GMm/2r), implies speed increses. (T.E.=PE+KE) 2: 98 01A 1 (c)(ii) E=T.E. http://m1.freeshare.us/128fs1722277.png http://m1.freeshare.us/128fs1722344.png 2. Relevant equations T.E.=PE+KE 3. The attempt at a solution in 2, if speed decreases, hence KE (=1/2 mv^2) decrease, as K.E.=GMm/2r, then r should be increased instead of decrease, so any contradiction?