Practice Question

Plants Aphids Spiders Sparrows

In this food chain, the spiders are-A. ProducersB. Primary consumersC. CompetitorsD. Secondary consumers

D

Conservation of Energy

October 19, 2010

Regular Energy Formulas

• GPE= mgh• KE = ½ mv2

• Uspring= ½ kx2

– The potential energy of a spring

Conservation of Energy

Ei = Ef

KEi + PEi = KEf + PEf

½ mvi2 + mgh = ½ mvf

2 + mgh