THÔNG TIN TÀI LIỆU
1) You asked for the force (F) 2)You are given the mass (m) and acceleration (a) 3) The second law applies F = ma 4) Plug in numbers Remember that N = kg.m/sec2 F = (5,000 kg) x (5 m/sec2) = 25,000 N 1) You are asked for the acceleration (a) and direction 2) You are given the forces (F) and mass (m) 3) The second law relates acceleration to force and mass (a = F ÷ m) 4) First, assign positive and negative directions Next, calculate net force Finally, use the second law to determine the acceleration from the net force and the mass 5) F = -100N - 150 N + 200N = -50N a = (-50 N)÷(25 kg) = -2 m/sec2 The wagon accelerates m/sec2 to the left
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