Answer:
Explanation:
Given
Each student exert a force of [tex]F=400 N[/tex]
Let mass of car be m
there are 18 students who lifts the car
Total force by 18 students [tex]F=18\times 400=7200 N[/tex]
therefore weight of car [tex]W=7200[/tex]
mass of car [tex]m=\frac{W}{g}[/tex]
[tex]m=\frac{7200}{9.8}=734.69 kg[/tex]
(b)[tex]7200 N \approx 1618.624\ Pound-force[/tex]
[tex]734.69 kg\approx 1619.71 Pounds[/tex]
