13. If a track athlete runs an 800 m race at a constant speed of 2 m/s, how long will it take her to win the race? Type A. 6.7 m

Question

13. If a track athlete runs an 800 m race at a constant speed of 2 m/s, how long will it
take her to win the race?
Type A. 6.7 min
your
B. 16 min
answer
C. 26.7 min
D. 400 min

in progress 0
Ngọc Khuê 3 years 2021-07-17T11:41:00+00:00 1 Answers 116 views 0

Answers ( )

  1. thugiang
    1
    2021-07-17T11:42:42+00:00
    Reply

    Answer:

    A

    Explanation:

    Speed=distance/time

    2=800/t

    t=800/2

    t=400 seconds

    t=400/60(min)

    t=6.67 min

Leave an answer

Browse

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