C. The driver is looking at her phone and has a total reaction time of 4.6 seconds as the car is moving at a constant speed of 11 m/s. If the driver slams on her brakes and slows down at a rate of -8.2 m/s2, what is the stopping distance for the car in this situation
Answers
Answer:
The stopping distance for the car when the driver slams on her brakes is 7.38 m.
Explanation:
The distance traveled for the car after stopping can be found using the following equation:
Where:
vf is the final speed = 0 (it stops)
v₀ is the initial speed = 11 m/s
a is the acceleration = -8.2 m/s²
d is the distance =?
When the driver slams on her brakes the distance traveled is:
Therefore, the stopping distance for the car when the driver slams on her brakes is 7.38 m.
I hope it helps you!
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I hope it helps, Regards.
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Q = m . v
Qtruck = 2680 . 15
Qt = 40.200 kg . m/s
Then,
Qcar = Qt
m . V = 40 . 200
1340 . V = 40.200
V = 40 . 200 / 1340
V = 30 m / s