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How far does your car, moving at 70 mi/h (= 112 km/h) travel forward during the 1 s of time that you take to look at an accident on the side of the road?

How far does your car, moving at 70 mi/h (= 112 km/h) travel forward during the 1 s of time that you take to look at an accident on the side of the road?

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
6 years ago
Let us assume that the speed of the car be represented by v whereas the time for which the car moves when the driver watch the accident is represented by t.
Given:
Speed of car, v = 112 km/h.
Time over which the car moved, t = 1s.
First we convert the time in hours as:

236-1287_cap.JPG
Also the distance travelled by the car (say s) during time t, moving with speed v, is given as:
s = vt
Substitute the given value of speed v and time t (in hours).

236-2018_time up.JPG
Therefore the car will move forward by 31 m.

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