Part 1: the concept of acceleration
1. an object starts from rest and accelerates at +3 m/s for ten seconds. its velocity at each second
shown. fill in the missing velocities.
o m/s +3 m/s
+9 m/s +12 m/s +15 m/s
+21 m/s +24 m/s +27 m/s

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

In a good thermo flask the main cause of heat loss is