A car moves in a straight line at a speed of 55.4 km/h. How long (in seconds) will it take the car to move 1.21 km at this spee

Question

A car moves in a straight line at a speed of 55.4 km/h.
How long (in seconds) will it take the car to move 1.21 km at this speed?

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Minh Khuê 2 months 2021-07-30T17:59:32+00:00 1 Answers 5 views 0

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    2021-07-30T18:00:36+00:00

    55.4 km => 1hr (60 min) (60×60=120 sec)

    1 km => 120 ÷ 55.4

    1.21 km => (120 ÷ 55.4) × 1.21

    = 2.6209 sec ( 5sf )

    = 2.62 sec ( 3sf )

    i hope you are able to understand my solution :))

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