# Calculate the percentage increase in mass

## Homework Statement

Calculate the percentage increase in the mass of an apollo rocket as it escapes from the Earth's gravity at 11.2 kps

## Homework Equations

11.2 kps = 11, 200 m/s

E= mc^2

mv= mo/ sqrt (1- v^2/c^2)

mv= mass of the object relative to stationary frame
mo= proper mass
v= velocity of the object

## The Attempt at a Solution

No idea how to do this

## Answers and Replies

Percentage increase is ## \frac {m_v - m_0} {m_0} 100 \%##.