The Work-Energy Theorem tells us that when we work on an object, the energy it has from moving (called kinetic energy) changes.
Work (W): This is the effort we put in when we push or pull something over a distance. We measure work in joules (J).
Kinetic Energy (KE): This is the energy an object has because it’s moving. We can figure it out using the formula: [ KE = \frac{1}{2} mv^2 ] Here, m is the mass of the object, and v is its speed.
Imagine you push a cart with a force of 10 newtons (N) for 3 meters (m). To find the work done, we use this formula:
[
W = F \times d
]
So, it looks like this:
[
W = 10 , \text{N} \times 3 , \text{m} = 30 , \text{J}
]
This means you did 30 joules of work.
Because of this work, the cart's kinetic energy goes up. This shows us how work and energy connect when things are moving!
The Work-Energy Theorem tells us that when we work on an object, the energy it has from moving (called kinetic energy) changes.
Work (W): This is the effort we put in when we push or pull something over a distance. We measure work in joules (J).
Kinetic Energy (KE): This is the energy an object has because it’s moving. We can figure it out using the formula: [ KE = \frac{1}{2} mv^2 ] Here, m is the mass of the object, and v is its speed.
Imagine you push a cart with a force of 10 newtons (N) for 3 meters (m). To find the work done, we use this formula:
[
W = F \times d
]
So, it looks like this:
[
W = 10 , \text{N} \times 3 , \text{m} = 30 , \text{J}
]
This means you did 30 joules of work.
Because of this work, the cart's kinetic energy goes up. This shows us how work and energy connect when things are moving!