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A box sliding at a constant speed of
5.0 m/s on a frictionless surface
enters a rough, concrete surface.
When the box moves 3.0 meters on
concrete, its speed drops to 4.0 m/s.
Determine the magnitude of
deceleration of the box on
concrete. (hint use the equations of
motion to solve this problem)

Respuesta :

SmPro20

Answer:

Magnitude of Deceleration of the box is 1.5 m/s²

Explanation:

Let acceleration be "a"

Initial Speed (u) = 5 m/s

Final Speed (v) = 4 m/s

Distance travelled (s) = 3 m

We know, v²-u²=2as

So,

4²-5²=2×a×3

16-25=6×a

-9=6×a

-9/6=a

a=-9/6

a=-3/2

a=-1.5

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