system
Given the following post, respond as if you're commenting on Reddit:
human
What is the energy need to take 1 kg of mass to the sun?

Was wondering what is the energy need to take 1 kg of mass to the sun? 
Also how much difference does it make with gravity assist or similar methods?

What's the ratio of energy needed to escape earth gravity to the energy needed to reach the sun?


Thanks in advance...
gpt
Earth velocity around the sun is 30km/s. If you zero this, the object would fall straight into the sun. We don't need exactly that since sun radius is 695000 km, so an orbit with periapsis lower than that would already be enough to impact the sun, but this is still about 28.5 km/s of delta-v.

So you need to decelerate your 1kg by 28.5km /s and energy is `(m*v^2)/2`, assuming this object is already in earth orbit.

Reaching LEO requires about 9.5km/s of delta-v.