Usually, some energy is "lost" or transferred into friction (heat and movement loss), so efficiency is never 100%. Still the overall amount of energy remains the same.
round gravity to 10 in most cases
round gravity (9.8m/s 2 ) to 10 in most cases
If the law of conservation of energy is true, where does the energy come from at the start of the uphill climb? (chemical/mechanical energy of the bicyclist) Where does the energy go at the end of the roller coaster? (heat of friction)
Discuss advantages/disadvantages of each
Discuss advantages/disadvantages of each
per capita = per person According to the CIA World Factbook estimate for 2010 the world consumes about 87 million barrels of oil each day.