Question

A train starts from rest and acquires a speed v with uniform acceleration a. Then it comes to stop
with uniform retardation B. What will be the average velocity of the train
1). aB/a+B
2). a+B/aB
3). v/2
4). v​

Answer 1

Answer

$3) \frac{v}{2}$

$because \: it \: is \: negative \: retardation \: so \: half \: ofthe \: speed \: velocity$