A 350 kg car traveling on cruise control requires 127 - N of force to maintain constant speed. How much work must be done to move the car 55 meters down the highway?

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class

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.

Can anyone plz answer any of these. even if its one it will