Question

tell this question answer and how

Answer 1

Initial velocity = 90km/h
=90*5/18 m/s
=25m/s.
Final velocity = 0
a= -0.5m/s^2
From the th third equation of motion,
v^2=u^2+2as
0=(25+25)+ 2* -0.5*s
0=625-1*s
0=625-s
s=625m.

Answer 2

hope it's useful for u. It's not copied...I have done on my own.