The car travelled 16.8 m during the thinking time
Explanation:
The question refers to a graph which is missing: find it in attachment.
The graph shows the speed of a car versus the time of the motion. We notice the following about the motion of the car:
- There is a first interval of time, between 0 and 0.7 seconds, in which the car travels at constant speed: this is the thinking time (also called reaction time), in which the driver has noticed the hazard but he is still reacting and he has not hit the pedal of the brakes yet
- Then after 0.7 seconds, the speed decreases: this is after the driver has hit the pedal of the brakes, and the car starts decelerating
Here we are interested in finding the dstance travelled by the car during the thinking time. In this time interval, the speed is constant, so we can use the equation for uniform motion:
[tex]x=vt[/tex]
where
v = 24 s is the speed of the car during the thinking time
t = 0.7 s is the thinking time
And substituting, we find:
[tex]x=(24)(0.7)=16.8 m[/tex]
Learn more about speed:
brainly.com/question/8893949
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