Question

A car of mass 1130 kg moves with velocity 17.6 m\s then it collided with a tree and moved with uniform acceleration until it stopped through a distance of 0.77 m ,calculate the force affecting the car?

a car of mass 1130 kg moves with velocity 17.6 m\s then it collided with a tree and moved with uniform acceleration until it stopped through a distance of 0.77 m ,calculate the force affecting the car

Answer 1

`F=227, 291N`

nearest whole number

Explanation:

we are given

`u=17.6" "ms^(-1)`

`v=0" "ms^(-1)`

`s=0.77" "m`

mass `" "m=1130kg`

to find the acceleration

`v^2=u^2+2as`

`:.0=(17.6)^2+2axx0.77`

`0=309.76+1.54a`

`=>a=-309.76/1.54=-1408/7 " "ms^(-2)`

ie retardation

force on car

N2L

`F=ma=1130xx1408/7=227291N`

to the nearest whole number