ارجو المساعدة

[BACK TO SCHOOL]

لو سمحت حد يجاوبنى على السؤال دة لانى مش عارفة احله ارجوكم ارجوكم
a broken down car started its motion from rest. on anclined plane whose inclination to the horizontal is theta where sin theta is 1/100 ,its velocity amounted to 44.1 km/hr after 250 sec calculate resistance per ton

[اسامة احمد على]

ma=mg sinθ-Rmg
then a=gsinθ-Rg U=44.1 km/h=12.25 m/sec
V=u+at then 0+a×250=12.25 a=0.049
If R is the resistance per ton

then
R=(9.8×0.01-0.049)/9.8