# Physics l help due today dont kno how to do it speeds

• albarnett17
He also mentions using simulations to check the answers. The conversation ends with a suggestion to post the question in a homework help section for assistance. In summary, the conversation is about Dave seeking help with finding the maximum speed of a car on a track, taking into account various factors and using simulations to check the answers. A suggestion is made to post the question in a homework help section for assistance.
albarnett17
Physics l help please due today don't kno how to do it speeds

A 1000-kg car moves at a maximum speed so that it does not skid off the 50-m radius level track. If the coefficient of static friction between the road and wheels is 0.80. What is the maximum speed? Assume that the gravitational constant is 10.0 N/kg =10.0 m/s. Use the simulations in 4.5 Car Circles a Track to check your answers.

Write an equation for the vertical y-component form of Newton's second law. Determine the magnitude of the normal force. Then use a force law equation to determine the magnitude of the static friction force.

Write an equation for the radial component form of Newton's second law. Use this to determine the maximum speed that the car can travel so that it does not skid (so that friction can provide the needed force to keep the car moving in a circle). Once you have calculated the maximum speed adjust the speed slider in the 4th simulation to this speed and see if the car stays on the track.

This sounds like homework ?
maybe should be in that section to get some help :)

Dave

## 1. What is physics?

Physics is the branch of science that deals with the study of matter, energy, and the interactions between them. It seeks to understand the fundamental laws and principles that govern the behavior of the universe at both the macroscopic and microscopic levels.

## 2. How does physics help us understand speeds?

Physics helps us understand speeds by providing us with the tools and concepts to measure and calculate different types of speeds, such as velocity and acceleration. It also explains the factors that affect the speed of an object, such as mass, force, and friction.

## 3. What are the units of speed in physics?

The units of speed in physics are meters per second (m/s) in the SI system, and feet per second (ft/s) or miles per hour (mph) in the imperial system. Other common units of speed include kilometers per hour (km/h) and knots (nautical miles per hour).

## 4. How do I calculate speed in physics?

To calculate speed in physics, you need to divide the distance traveled by the time it took to travel that distance. The formula for speed is: speed = distance / time. You can also calculate speed by dividing the change in velocity by the change in time.

## 5. What are some real-life applications of physics in understanding speeds?

Physics has many real-life applications in understanding speeds, such as in transportation (e.g. designing faster and more efficient vehicles), sports (e.g. analyzing the speed of a baseball pitch or a sprinter), and weather forecasting (e.g. predicting the speed of winds and storms). It also plays a crucial role in technologies like GPS navigation and satellite communication.

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