Question

A car of mass 800kg is travelling with a velocity of 20 m/s. When brakes are applied, it stops after travelling a distance of 8 m. Find retardation & retardational .

Answer 1

U=20m/s
V=o
S=8m
Using v^2-u^2=2as
=o-400=2*a*8
-400/16=a
Retardation =400/16
Force =ma=800*-400/16
Plz mark me as brainliest

Answer 2

v²-u²=2as
0²-20²=2*a*8
-400=16a
a=400/16
a= -25 m/s or 25 m/s
f=ma
f=800*25
  =20000N