Forums Science Assignment Help how far is your hometown from school

This topic contains 2 replies, has 3 voices, and was last updated by  manjit singh 6 years, 4 months ago.

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  • #8459

    Anonymous

    you are driving home from school steadily at 65 mph for 130 miles. it then begins to rain and you slow to 55 mph. you arrive home after driving 3 hours and 20 minutes.

    a.) how far is your hometown from school..?

    b.) what was your average speed..?

    #15209

    juwanine
    Participant

    ans:

    a) 203.33 miles

    b)average speed-61.06mph

    #15434

    manjit singh
    Member

    Given v=65 mph
    S=130 miles
    we have v = s/t
    t = s/v
    = 130 / 65 = 2 hrs
    T= 2 hour (1)

    2nd case,
    S= 55 mph
    T= (3.33-2)
    = 1.33 hour
    v = s/t
    Distance covered =55 *1.33= 73.33 miles (2)
    From (1) and (2)
    Total distance 73.33+130 = 203.33 miles

    (b)Average speed = (total distance )/(total time)
    =(203.33 )/3.33
    =61.06 mph

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