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Rufina [12.5K]
3 years ago
7

If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the

curve (a real problem on icy mountain roads). (a) Calculate the ideal speed in (m/s) to take a 110 m radius curve banked at 15°. 16.99 Correct: Your answer is correct. m/s
Physics
1 answer:
exis [7]3 years ago
3 0

Answer:

ideal speed(v)≅17m/s

Explanation:

Given: Radius, r = 110 m

Angle(α) = 15°

g=9.81m/s^{2}

Find; (a) The ideal speed, v.

tanα=\frac{v^{2} }{rg}

make V subject of the formula;

v=\sqrt{rgtan\alpha }

v=\sqrt{110 * 9.81* tan15}

v=\sqrt{289.144}

v≅17m/s

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A student pushes a 12.0 kg box with a horizontal force of 20 N. The friction force on the box is 9.0 N. Which of the following i
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The acceleration of the box is approximately 1 m/s^2

Explanation:

According to Newton's second law of motion, the net force acting on the box is equal to the product between its mass and its acceleration:

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The net force can be written as

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Learn more about Newton's second law:

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8 0
3 years ago
Alice climbs 100 meters directly up the face of a cliff to reach the summit. Her friend Peter hikes the long way around taking a
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Answer:

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Explanation:

To solve this question, we have to first define distance and displacement.

Distance is simply the measurement of the sum of all paths travelled from one point to another while displacement is measurement of the shortest distance from initial point to final point.

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4 0
4 years ago
Help meeeee pleeseee
geniusboy [140]

Answer:

I think the answer is option D ...

bt I m not sure..

8 0
3 years ago
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