Acar waits at a ref light for a few seconds, and then accelerates straight ahead to 54km/h in 3.1s and then cruises at a constant speed for 75m. find the total distance and time travelled

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.