1.Today I drove 125 miles in 110 minutes. What was my` average speed in miles per
hour?(There are 60 minutes in one hour)
(能不能帮我列出完整的式子)
2.Light travels through space at a constant speed of 3X10?m/s. What is the acceleration of a beam of light?
3.what is the acceleration of a car if it begins at 100km/h and comes to a stop after 8 seconds? you may write your answer with the units of km/h/s. In what direction is the car's acceleration (in the same direction or opposite direction of the car's motion)?
希望可以讲得详细一些,很急用!!
谢谢了~
1、Today I drove 125 miles in 110 minutes. What was my` average speed in miles per hour?(There are 60 minutes in one hour)Ans：average speed v=total course/time cost=125/(110/60)≈68.18 miles/hour2、Light travels through space at a constant speed of 3X10?m/s. What is the acceleration of a beam of light?Ans：Since th
1: Conversion of Time: 110 Minutes = 110/60 = 11/6HoursAverage Speed = 125Miles/11/6Hours =68 Miles per Hour.(This is not a physical question) 2: The acceleration i
