Homework Statement
How much energy is required to move a satellite from an altitude of 1RE to 3RE?
Homework Equations
1RE= 1 x Radius of the Earth
The Attempt at a Solution
I tried to find the the GPE of the oject but its not working.
Captain Jack Sparrow shoots a cannonball at the black pearl which is located off the cliff that is 100m high. The cannon ball leaves the cannon at 50m/s at 30° to the horizon and hits the Black Pear(the ship) directly.
How far is the Black Pearl(the ship) from the cliff?
Please help thanks.