A city planner is working on the redesign of a hilly portion of a city. An important consideration is how steep the roads can be so that even low-powered cars can get up the hills without slowing down. A particular small car, with a mass of 920 kg, can accelerate on a level road from rest to 21m/s(75Km/h) in 12.5 s. Using these data, calculate the maximum steepness of a hill.

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Q: A ball is thrown vertically upward. It has a speed of 10 m/sec when it has reached one half of its…

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Q: 2. A crate is given an initial speed of 3.0 m/sup a 25° inclined plane. As (a) What is the…

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A: The equation for the average velocity is given by, v→avg=vi→+vf→2 Here, vi→ is the initial velocity…

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A: in this question we use conservation law of momentum in x and y direction.

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A: Given data, Weight of Meagan = 125 Ib = 550 N Height of Meagan = 5'6" = 168 cm

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Q: A bridge that was 11.2 m long has been washed out by the rain several days ago. How fast must a car…

A: The given data are: l=11.2 md=3.3 m Here, l is the length of the bridge and d is the distance.

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A: To solve the given question, we will use the conservation of energy.

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Q: You are a police officer examining the scene of a car crash that claimed the life of someone driving…

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.