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justinhudson17
11.10.2019 •
Geography
A854 kg car is traveling at 18.1 m/s. the driver wishes to go faster, so he pushes down on the gas pedal, and a force of 1260 n acts on the car to speed it up. after 4.1 s, how many meters per second will the car be traveling at? round your answer to the nearest tenth.
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Ответ:
The car will be traveling at 24.2 m\s.
Explanation:
The first relationship we can estabilish between the measures is:
In which F, in N, is the force, m in kg is the mass and a is the accelation.
In this problem, we have that:
So
We also can relate the speed to the accelaration, by the following formula:
In which v is the speed,
is the initial speed, a is the acceleration and t is the time.
We have that,![v_{0} = 18.1, a = 1.48, t = 4.1](/tpl/images/0308/8996/62b8b.png)
So:
The car will be traveling at 24.2 m\s.
Ответ: