Jawabanmu

2014-04-18T10:00:49+07:00
Perlambatan mobil :
= 20 m/s
     10s
= 2 m/s²

Gaya rem F :
= 1000 Kg x 2 m/s²
= 2000 Newton.
2014-04-18T12:18:42+07:00