Question

please answer me with details

Answer 1

Speed = distance /time

50/4 = 250/t

t = 250 x4/50 = 20 sec

Answer 2

hey mate here is your answer

here displacement=250m

speed=v=50/4m

Acceleration =0 (because speed is constant.)

so we know that S=ut+1/2at^2

250=50/4×t +1/2×0×t^2

t=250×4/50

t=5×4

t=20sec

hope it's helpful to you........