1. Explain the difference between an elastic and inelasticcollision.
2. How many times more energy is required to increase the speedof a 2200 pound car by 10 mph if car initially is going 30 mphversus it initially going 80 mph? (convert to metric)
3. how many horse power are required to accelerate from 80 mphto 90 mph in 0.75 seconds? (tell me the average horsepower. 1horsepower = 750 watts)
4. will a solid lead cylinder float or sink in mercury? why?(Pp= 11.34 g/cm^3, Hg= 13.53 g/cm^3)
5. how many centimeters of the lead cylinder would be submergedin the mercury if its dimensions are (radius = 5cm, height =10cm)
