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Sansak
Questions and answers by visitors named
Sansak
Answers (1)
Mass of girl = 35 kg Mass of trolley = 5 kg Total mass, m = (35 + 5) = 40 kg u = 4 m/s v = 0 s = 16 m By equation, v 2 = u 2 + 2as 0 = (4)2 + 2a (16) 32a = –16 a = –0.5 m/s2 Force exerted on trolley, F = ma = 40 × 0.5 = 20 N Work done on trolley W =
