A car of 1000 kg starts to move from rest and travels a distance of 150 m in 10 second. How much force is needed?

Question

asked Apr 11, 2022 116k views

1 Answer

Oliver Drotbohm · Answer 1 · 2022-04-17T09:26:17+0000

Using second equation of kinematics

$\\ \sf\longmapsto s=ut+(1)/(2)at^2$

$\\ \sf\longmapsto 150=0(10)+(1)/(2)a(10)^2$

$\\ \sf\longmapsto 150=(1)/(2)* 100a$

$\\ \sf\longmapsto 50a=150$

$\\ \sf\longmapsto a=(150)/(50)$

$\\ \sf\longmapsto a=3m/s^2$

Using newtons second law

$\\ \sf\longmapsto F=ma$

$\\ \sf\longmapsto F=1000(3)$

$\\ \sf\longmapsto F=3000N$