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physics

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Ann is driving down a street at 59 km/h.
Suddenly a child runs into the street.
If it takes Ann 0.774 s to react and apply
the brakes, how far will she have moved before
she begins to slow down?
Answer in units of m

  • physics - ,

    distance= velocity*time=59km/hr*.774 seconds.

    well, some unit conversion is in order.

    distance= 59km(1000m/km)*1/hr * 1hr/3600s*.774 s

    that does it.

  • physics - ,

    Emily takes a trip, driving with a constant velocity of 81.5 km/h to the north except for a 22 min rest stop. If Emily's average velocity is 72.8 km/h to the north, how long does the trip take?

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