HSC Physics: Space

HSC Physics: Space

1. 1. The Earth has a gravitational field that exerts a force on objects both on it and around it.

   • 1.1.1 Weight
     • W = mg
   • 1.1.2 Work and gravitational potential energy
     • W = Fs
       • W = Work F = Force s = displacement
     • Ep = mgh
       • Ep = Gravitational Potential energy m = mass g = gravity h = height
   • 1.1.3 Definition of gravitation potential energy

2. 2. Many factors have to be taken into account to achieve a successful rocket launch, maintain a stable orbit and return to Earth.

3. 3. The solar system is geld together by gravity.

4. 4. Current and emerging understanding about time and space has been dependant upon earlier models of transmission of light.