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vnfrancis3716
09.03.2021 •
Physics
A truck moving at 6.0 m/s applies the brakes and stops after skidding 12.0 m.
(a) Find the uniform deceleration. (20 pts)
(b) Find the time it takes for the truck to stop. (20 pts)
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Ответ:
a) a= -1.5 m/s²
b) t = 4.0 s
Explanation:
a)
Since we are told that the deceleration is uniform, we can use the following kinematic equation:b)
Since we know the value of the initial and final velocity, and the value of the acceleration also, we can apply the definition of acceleration, solving for time t, as follows:Ответ:
the only forces acting on it is that of its weight and the wall and those forces must be equal
Explanation: