Answer:
-1.09m/sec^2
Explanation:
Acceleration= (Vf-Vi)/Time
=12-54.8
= -42.8
= -42.8/39
=-1.09
-ve sign is due to recoil of train
as it suddenly hits brakes.
Answer:1.097 m/s^2
Explanation:
a=(final velocity- initial velocity )/time
=(54.8-12)/39
=1.097 m/s^2
