Your mother is sure that you were driving too fast because she knows (2 points) A.)when you arrived and the direction you came from
B) how long it took you to get home and how far you traveled
C.)what time you left and how long it took you to get home
D.)the direction you were driving and how far you traveled

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.