Please help the fossil evidence show is useful for supporting the idea of continental drift because-

A ) The fossil show how the animals could swim from one continent to the next.
B ) The fossil are found in layers of sedimentary rocks that were deposited on separate continents.
C ) The fossil show that the animals once lived on a joined super continent.
D ) Fossil can be formed in a relatively short amount of time.

You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.