(2p) Write down the definition of the linear momentum of an object and describe it.

1. (1p) Explain what is the linear momentum of a system.

1. (2p) Write down the equation for the kinetic energy of an object and explain what is a kinetic energy.

1. (2p) Write down the equation for the gravitational potential energy and explain what is a potential energy.

1. (1p) Whatdoesitmeanfor aquantitysuchasmomentumtobe conserved?

1. (2p) What is a mechanical energy and what does it mean for a mechanical energy to be conserved?

1.