I don't know physics, but I can show you one way to solve this problem.
First, let's find how many meters each vehicle covers in one minute.
90 km/h = 90,000 m/h = 1500 m/minute
75 km/h = 75,000 m/h = 1250 m/minute
1500 - 1250 = 250 meters
100/250 = 0.4 minute
Convert km/h to m/s:
(90 km/h)(1000m/1km)(1 h/3600s) = 25.000 m/s
(75 km/h)(1000m/1km)(1 h/3600s) = 20.833 m/s
Let time of catching up = t
The distance travelled by slower car = (20.833 m/s)(t)
The distance travelled by faster car = (25.000 m/s)(t)
The distance travelled by the faster car is 100 m longer than the slower car:
(20.833 m/s)(t)+100m = (25.000m/s)(t)
100 m = (25.000m/s - 20.833 m/s)t
100 = (25.000 - 20.833)t
You should ba able to find the time in seconds, t, on your own.
The 100 m between the cars closes at a rate of 15km/h = 15,000 m/h
The gap becomes zero after 100/15,000 = 1/150 h = 0.40 min = 24 s
We all agree
THANK YOU SOO MUCH!! THIS REALLY HELPED!!!
Answer this Question
English - I'm finding it difficult to turn sentences (or better speech acts) ...
Physics - I came here earlier with this question: "A force of 20 N acts toward ...
physics(please help...very urgent.....) - A ball is hit at an angle of 36 ...
algebra - I asked this question earlier and wasn't sure what the answer was. ...
Math: Homework Questons (answer quick) - Can you check if the answer is correct...
Physics - same ? as marina but im smarter, lol - Marina is my bf and we both ...
calculus - So from a previous post I asked, "f(x)=(1+x) what is f'(x) when x=0...
Environmental Science - Can someone please help me with this question because ...
vectors components - plz answer my question a river is 2 km wide and flows at ...
bobprsly - I do apologize but I looked in the past post and i don't remember ...