A bus travels 210 km south along a straight path with an average velocity of 85 km/h to the south. The bus stops for

Question

A bus travels 210 km south along a straight

path with an average velocity of 85 km/h to

the south. The bus stops for 25 min, then it

travels 230 km south with an average velocity

of 73 km/h to the south.

How long does the total trip last?

Answer in units of h.

in progress 0
Orla Orla 4 months 2021-07-14T04:21:20+00:00 1 Answers 9 views 0

Answers ( )

    0
    2021-07-14T04:22:48+00:00

    Answer:

    6.04 hr

    Explanation:

    The bus first travels a distance of 210 km south at an average velocity of 85 km/h. The time, t it takes to cover this distance is gotten from d = vt and t = d/v where d = distance and v = velocity.

    So, t = 210 km/85 km/h = 2.47 h

    The bus then stops for 25 min. We convert 25 min to hours by dividing by 60.

    So 25 min = 25/60 hr = 5/12 h = 0.42 h

    The bus then travels 230 km south at an average velocity of 73 km/h.

    The time it takes to cover this distance is t = 230 km/73 km/h = 3.15 h

    So, the total time for the trip is the sum of each individual time, which is 2.47 h + 0.42 h + 3.15 h = 6.04 hr

    So, it takes 6.04 hr for  the total trip

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )