Work and Energy
- The ability to do work
- The amount of work done
W = F X d
Where F is the Force doing the "pushing" and d is the distance the object moves.
The distance and the force must be in the same direction.
In this equation, Force is measured in [N], Newtons and distance is measured in [m], meters.
The Work-Energy Equivalence states that the amount of work done is equivalent to the energy used tp achieve this work, and viceversa.WORK = Energy
1 Joule = 1 Newton-meter
1 J = 1Nm
Given: F = 100 N
d = 50 m
W = F x d
= 100 N x 50 m = 5000 J
Therefore, the shopper uses up 5000 N of Energy in pushing the grocery cart.
At the same time, the work she is doing on the cart is also 5000N since Work = Energy.