OCR Gateway P3h

Description

Flashcards on OCR Gateway P3h, created by Zaaaara on 29/05/2014.
Zaaaara
Flashcards by Zaaaara, updated more than 1 year ago
Zaaaara
Created by Zaaaara over 10 years ago
28
1

Resource summary

Question Answer
P3h - The energy of games and theme rides .
Gravitational Potential Energy (GPE) An object held above the ground has Gravitational Potential Energy. The amount of GPE an object on Earth has depends on its: Mass and Height above the ground.
Continue... If an object is lifted, work is done against gravitational force. GPE = mgh or GPE = m × g × h GPE = the gravitational potential energy in joules, J m = the mass in kilograms, kg g = the gravitational field strength in newtons per kilogram, N/kg h = the change in height in metres, m
Energy Transfers A bouncing ball converts GPE to Kinetic Energy and back to GPE. It doesn't return to it's original height because energy is transferred.
Kinetic Energy KE = ½ mv2
Energy Transfer When an object falls through the atmosphere at terminal speed: its kinetic energy, KE, does not increase gravitational potential energy, GPE is transferred to the surroundings as heat because of friction (air resistance).
How roller-coasters work The riders at the top of a roller coaster ride have a lot of gravitational potential energy. When the train is released, it converts GPE to kinetic energy as it falls. This is shown in the formula: loss in GPE = gain in KE
Continue... As the train falls: GPE = KE … so … mgh = ½ mv2 Notice that m appears on both sides of the equation and can be cancelled out: gh = ½ v2 This equation can be rearranged to give: h = v2 ÷ 2g
The kinetic energy an object has depends on its: Mass – if the mass doubles, the KE doubles Speed – if the speed doubles, the KE quadruples (increases four times). .
Show full summary Hide full summary

Similar

OCR Gateway P3h Quiz
Zaaaara
Untitled_23
fahimarehman04
Blood Brothers (Characters)
nuhaheza
Key Shakespeare Facts
Andrea Leyden
GCSE French - Parts of the Body
Abby B
AS Economics Key Terms
Fred Clayton
The Cold War: An Overview
Andrea Leyden
untitled 2
lola_smily
“The knower’s perspective is essential in the pursuit of knowledge.” To what extent do you agree with this statement?
Lucia Rocha Mejia
Leaving Certificate Japanese Kanji
Sarah Egan
Using GoConqr to study Economics
Sarah Egan