(13%) Problem 3: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a sled. The first child exerts a force of 78 N. the second a force of 9/ N, kinetic friction is 6.5 N, and the mass of the third child plus sled is 235 kg. Using a coordinate system where the second child is pushing in the positive direction, calculate the acceleration in m/s. Grade Summary 0 = Deductions Potential 100% sin() COS( tan() 7 HOME Submissions cotan( asing acos() F 5 Attempts remaining: 5 atan( acotan() sinh( 2 3 (0%% per attempt) detailed view cosh( tanh() cotanho + END Degrees O Radians VO BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 5 Feedback: 0% deduction per feedback