Question

I need a complete answer for this . no direct answers allowed !​

Answer 1

Answer:

u = 50m/s           s= 500m

Explanation:

given , a = -2.5m/s2 ( -ve because retarded)        t = 20s

v = 0 ( stops)

as we know , v= u+at

0 = u-2.5* 20

u =50m/s  ( intial speed)

as we know,, v^2 = u^2+ 2as

0 =(50)^2 -2*2.5*s

5s = 2500

s= 500 m