Question

Physic about newton's law


1.
How much work done by Olympic gold medalist power lifter Hydilyn Diaz when she
pushes a car with a force of 900 N at a distance of 250m?


2.
How much work done by a tractor if a large rock is pushed with a force of 5000
N at 2.0 m/s for 20 seconds?

Answer 1

#1

• Force=900N
• Displacement=250m

$\\ \sf\longmapsto Work=Force(Displacement)$

$\\ \sf\longmapsto Work=900(250)$

$\\ \sf\longmapsto Work=225000J$

$\\ \sf\longmapsto Work=225KJ$

#2

• Displacement=2(20)=40m
• Force=5000N

$\\ \sf\longmapsto Work=40(5000)$

$\\ \sf\longmapsto Work=200000J$

$\\ \sf\longmapsto Work=200KJ$