Uniform Linear Motion Model: Energy & Momentum

Physics 1: Sections 2.4 & 2.5

What is energy?

Ability to do work

What is the symbol and SI unit for energy?

E subscript and joule (J) kg * m² / s²

What is kinetic energy?

The energy of an object associated with its motion and equal to one-half the product of the objects mass and the square of its speed

What is the formula for kinetic energy?

EK = ½ mv² where v= speed

What is the symbol and SI units for kinetic energy?

EK and joule

How does kinetic energy fit into the stationary particle model?

The velocity and speed are zero

EK= 0

How does kinetic energy fit into the uniform linear motion model?

The velocity and speed is constant

EK= constant

What is momentum?

The product of mass and velocity

What is the formula for momentum?

px = mvx where vx= velocity in x direction

What is the symbol and SI units for momentum?

px and kilogram x meter per second (m/s)