The acceleration is 2.5 meters per second, and the displacement is 10 meters in the last two seconds
s=vt2+at2^2/2
2v=10-5=2.5m/s
v=at1
t1=v/a=2.5/2.5=1s
Total time: T = T1 + T2 = 1 + 2 = 3S
s=vt2+at2^2/2
2v=10-5=2.5m/s
v=at1
t1=v/a=2.5/2.5=1s
Total time: T = T1 + T2 = 1 + 2 = 3S