Question

Answer this please....Both roman number 1 and 2

Answer 1

hey mate ,

acceleration=change in velocity by time taken

Roman1

Acceleration of OA=10-5/2=2.5m/sec

Acceleration of AB=10/9=1.1m/sec

Acceleration of BC=25-10/12=1.2m/sec

Roman2

distance=time*velocity

therefore,

distance covered in last 3 sec=3*25=75

hope this helps u