Question

13. A train takes t s to perform a journey. It travels
for s with uniform acceleration, then for
n
(n-3) - s with uniform speed v and finally it
n
comes to rest with uniform retardation. The
average of the speed of the train is
v
(a) (3n-2)
2n
(b) (2n-3) 21
v
(c)(3n-2)
3n
(d) (2n-3)
3n​

Answer 1

Answer:

the correct answer is option A

Answer 2

Answer:

(2n-3) 21

(2n3)

(3n-2)

(3n-2)