Recent content by buzz3

so I'm not sure how to set up an energy balance for a velocity change, hence me posting the thread... total energy should be conserved, so the sums of the kinetic and potential energies should be zero - right? but again, i don't know how to set that up for the velocity change. i know...

Homework Statement You may assume circular planetary orbits. a. Calculate the velocity (relative to Earth) at Earth's orbit of the Hohmann transfer orbit that is tangent to both Earth's orbit and Jupiter's orbit. b. calculate the minimum velocity necessary to launch a spacecraft from...

Homework Statement A baseball pitcher can throw a fastball at a speed of 150 km/hr. What is the largest size spherical asteroid of density rho=3 g/cm^3 from which he can throw the ball fast enough that it: (a) escapes from the asteroid into heliocentric orbit? (b) rises to a height of 50...