starting from rest,your swell new car, the zipper slipper,travels 402 M in 16 seconds.

Question

starting from rest,your swell new car, the zipper slipper,travels 402 M in 16 seconds.

A) what is its acceleration
B) if your car`s mass is 900 kg, what net force was required to cause this acceleration?

Answer 1

Hi Neveen;

s=(1/2)at²

distance=(1/2)(acceleration)(time²)

[(2)(distance)]/(time²)=acceleration

[(2)(402 m)]/(16 s)²=acceleration

(804 m)/(256 s²)=acceleration

3.140625 m/s²=acceleration

3.14 m/s²=acceleration

 

F=ma

Force=(mass)(acceleration)

Force=(900 kg)(3.14 m/s²)

Force=2826. kg m/s²

Force=2826. Newtons

Force=2826. N