Question

Please help with B I don’t understand why you have to switch it round!!!

Answer 1

W = 90 kg* 9.8 m/s^2 = 882 N apparent weight of stretcher and occupant

F = M a straightforward application of Newton's Second Law

F = (940.5 - 882) a

a = .65 m/s^2 acceleration of stretcher and occupant