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Lana71 [14]
3 years ago
6

Predict the acceleration of a roller coaster that goes from 0 to 190km/h in 4 seconds. Express your answer in km/s^2. Round to t

hree decimal places.
Physics
1 answer:
Assoli18 [71]3 years ago
8 0

Answer:

0.13 km/s²

Explanation:

Convert hours to seconds

1 hour = 60 seconds (60) = 3600 seconds

\frac{190}{3600} = 0.052778

\frac{0.052778}{4s} = 0.013195

0.13 km/s^2 (Round the three decimals)

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The question is incomplete but still I answer to assume your thinking.
The picture is attached below!.
Here,
F is the force with which you pull up the incline.
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Concept:
You can see there is no movement of object in the y-direction that means acceleration is zero in y-direction, sum of all the forces in y-direction equal to zero.
According to newton second law,
<span>∑ F = ma
</span>As, acceleration is zero in y-direction, so right hand side is zero in the above equation.
<span>∑ F = 0</span>
N-wcosθ=0 
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Hopefully, this is the answer of your question.


5 0
4 years ago
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A book is sitting on a desk. What best describes the normal force acting on the book?
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3 years ago
An 4.0-kg fish pulled upward by a fisherman rises 1.9 m in 2.4 s, starting
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Answer:

2.64N  

Explanation:

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