2.4 - Mechanical Energy

Question 1

The term mechanical energy means the ______ of an objects potential and kinetic energy

Answer 1

Sum

Question 2

When ______ is done on an object, the object gains energy as a result

Answer 2

Work

Question 3

An object is gaining ______ energy if it increases its speed, and an object us gaining ______ energy if it is getting higher above the ground

Answer 3

Kinetic

Gravitational potential

Question 4

The Law of Conservation of Mechanical Energy

Answer 4

Within a closed, isolated system, energy can change form (between potential and kinetic), but the total amount of mechanical energy remains constant

Question 5

A ______, ______ system means that it is isolated from external forces so no worm can be done on it (energy can’t be added or taken away). It is sometimes referred to as a ______ system

Answer 5

Closed, isolated

Frictionless

Question 6

All this really means is that potential energy is being ______ to kinetic or vice versa

Answer 6

Converted

1/2 v^2 = gh