How far will the car have moved before you begin to slow down?


car
Amber B asked:


You are driving down the street in a car at 55 km/h. Suddenly a child runs into the street. If it takes you 0.75 s to react and apply the brakes, how far will the car have moved before you begin to slow down?

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This entry was posted on Tuesday, March 31st, 2009 at 11:56 am and is filed under Physics. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “How far will the car have moved before you begin to slow down?”

  1. Thermo Says:

    55 km/h x 0.75 s =
    55000 m / 3600 s x 0.75 s =
    11 s

    Th

  2. MikeY Says:

    Agree with Th method :

    5.5/3.6*7.5 metres

    just under 11.5 metres

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