Ask Experts Questions for FREE Help !
Ask
    Eloisea1's Avatar
    Eloisea1 Posts: 13, Reputation: 1
    New Member
    		  
    #1

    Oct 3, 2010, 04:55 AM
    Average Speed
    Jess lives 2.5km away from school , it takes her 30 minutes to walk to school. What is her average speed in km/h? I know that average speed = total distance dive total time , but do not get how to work it out , can anyone help please? Thanks.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Oct 3, 2010, 05:55 AM

    Convert first minutes into hours.

    60 minutes = 1 hour
    30 minutes = (1/60)x30 hours = 0.5 hours

    Hence, average speed =

    Work it out :)

    Post what you get! :)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #3

    Oct 3, 2010, 06:13 AM

    Yes, that's exactly what this means.

    If he walked for an hour, he would have covered twice the distance he covers in 30 minutes :) (which is indeed 5 km/h)
    Eloisea1's Avatar
    Eloisea1 Posts: 13, Reputation: 1
    New Member
    		  
    #4

    Oct 3, 2010, 06:19 AM
    Comment on Unknown008's post
    Oh , yes I see thank you so much! This is really helpful :)
    Eloisea1's Avatar
    Eloisea1 Posts: 13, Reputation: 1
    New Member
    		  
    #5

    Oct 3, 2010, 06:21 AM
    Comment on Unknown008's post
    I also have another question , that maybe you could answer? It is under the subject average speed 2? Could you help me with that please?
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Average speed and average velocity [ 2 Answers ]

Every morning you jog around 250 meter track four times in 30 minutes. What is your average speed and average velocity?

How to find average speed with given speed and distance [ 3 Answers ]

Suppose you go 75 mph for 53 miles, 55 mph for 21 miles and 35 mph for 3 miles... what is your average speed?

How to find final speed when initial speed and average speed is given [ 5 Answers ]

a car travels a certain distance with a speed of 40m/s and returns with a speed 'u'. If the average speed for the whole journey is 48m/sec what is the value of'u'?

Average speed/average velocity [ 1 Answers ]

A horse canters away from its trainer in a straight line, moving 150 m away in 19.0 s. It then turns abruptly and gallops halfway back in 4.6 s. (a) Calculate its average speed. m/s (b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive...

Average Speed [ 1 Answers ]

How to calculate average speed if distance & speed is given

View more questions Search