Question

A body accelerates from rest at a constant rate of 2 ms^2 for 5 s and then with a constant speed attained for next 5 s.Constant acc that is required to be applied now to bring it back to its starting point after next 10 s is???

Answer 1

Basic equation of motion S= ut + 0.5a(t*t)

S1= 0.5a(10*10)

S1 + S2 = 0.5a(20*20) =4*S1

S2 = 3S1