# A Sports Car Moving At Constant Speed Travels 110m

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A Sports Car Moving At Constant Speed Travels 110m – Phys131 Physics 2021 Tutorial Two The deadline for this tutorial is Tuesday 6 April 2021. Reading: Chapter 2: O Giancoli, (x, y)) 7th edition. Note (x, y) means room x; problem.

1. (2.2) 2. What is the average speed of your car to travel 235 km in 75 hours?

## A Sports Car Moving At Constant Speed Travels 110m

2. (2.4) A rolling ball moves from x1 = 8:4 cm to x2 = 4:2 cm.

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T1= 3:0 s to t2= 6:1 s: What is the value period this time in the middle?

155 km = whit h respect t from base. If it is itia lly 8:5 km ap art. How long do you want?

4. (2.17) A racing car accelerates from rest to 95 km= h in 4:3 s. What is this period.

5. (2.19) A sports car moving at constant speed travels 120 m in 5.0 s. If you brake

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Stop for 4.0 s; What is its acceleration m=s2 a nd in ?

6. (2.24) The plane must reach a speed of 35 m= s for r tak eo¤. De term ine th length of

7. (2.35) A runner wants to complete 10000 m each in 3 0.0 mi n. Then precisely

27.0 minutes; There is still 1200 meters to go in the race. How many seconds?

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Should it accelerate at 0:20 m = s2?

8. (2.39) A rock falls from the top. 3.55 seconds later, it falls to the ground below.

Reading: Chapter 2: Giancoli, (x, y)) From the 7th edition. te (x, y) means s ch apte r x; prob lemChristine Helms to receive funding from any company or organization that would benefit from this article; to consult It does not work for ownership or finance; They do not disclose their academic affiliations. Date.

There is only one thrill in traveling at high speed. Throughout history, people have been on foot, riding Whether on a boat or on a bike. whether on foot or

Almost every week today’s speed lovers can live in style by watching their favorite NASCAR drivers race around the track at death-defying speeds.

It could be the excitement in the crowd or it could be the constant threat of danger that attracts people to the sport. Or maybe it’s the feats of science and engineering that attract some audiences. As a physicist, I love seeing all the basic concepts of physics on display at a NASCAR race.

NASCAR drivers travel at extremely high speeds of over 200 miles per hour. They accelerate so quickly that it only takes about 3 to 3.5 seconds to go from zero to 60 mph. At this speed the car must exert an average horizontal force of 2,600 pounds against the track. This is similar to the bite of a large American alligator or what it takes to carry a full grown buffalo.

According to Einstein’s special theory of relativity, As you move through space, the faster The slower your time will pass. So it’s fair to say that speed demon NASCAR drivers are much smaller than the rest of us. At the end of the 3.5 hour race, the drivers were only about 0.5 nanoseconds ahead of the stationary spectators. If a driver drives non-stop at 200 mph for the next 50 years. He would be 70 microseconds younger than the rest of us.

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NASCAR drivers move at incredibly fast speeds compared to the crowd in the stands, but their speeds are tiny compared to what Einstein had in mind – about 670 miles per hour at for light to travel. The effect of the comparison on the track is small, but it is there.

Once the car enters a turn, it is natural to want to continue in the same direction it was originally traveling. to change direction to follow the curve of an elliptical path; Force must be used.

The required thrust comes from the friction between the tire and the track. Friction is the connection between two objects that prevents them from sliding against each other.

So it’s a balancing act for drivers – they want to keep the pedal to the metal, but not too fast because on a curve their speed is more than friction can handle. Too fast, and there may not be enough friction to stop the car continuing in its original direction and sliding straight into the wall. Too slow and you fall behind the competition.

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How to design a route can help here. This means that the turns are higher on the outside of the track and lower towards the middle. Part of the force that pushes the road, which physicists call the normal force, helps the frictional force of the tires and helps the car to roll.

In some of the fastest races, the banked turns resemble the steepness of a playground slide. Banking at Richmond International Raceway allows cars to travel approximately 1.3 times faster than without banking. Bigger curves and higher banking, such as those seen at Daytona and Talladega, give drivers higher speeds around those corners.

Power is a measure of the energy that is transferred from one form to another in a given period of time. In stock car racing, this conversion is from the chemical energy stored in the gasoline to the kinetic energy of motion.

A NASCAR engine produces about 750 horsepower (560 kW), about 300 horsepower more than a comparable street car. During competition, the power conversion of NASCAR engines is approximately 500 times the power consumption of the average American household during the same time period.

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Cars power comes from burning gas while the engine is running. A NASCAR engine spins 3.5 times faster than a typical street car, resulting in faster combustion and more power.

With high speed and the high speed of stock cars comes the danger of collisions. Some of the heaviest crashes in NASCAR register around 80 G’s – ie. 80 times the force of gravity pulling you towards the planet. From a point of view The amusement park ride looks over 6 G.

Safety components try to reduce these high forces at the time of each collision. It tries to extend the distance and the area. The principle is that there is less vibration than slamming on the brakes, or similar to the way a fingernail applies your body weight over a large area with one fingernail.

Safety barriers along the outer wall of the racetrack are designed to break down and disperse the force of the crash over a large area. The front end of the car has also collapsed, increasing the impact time.

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The safety components inside a NASCAR vehicle go beyond the seat belt in your car. Action Sports Photography/Shutterstock.com

Carbon fiber car seats absorb more impact energy than aluminum seats. They stabilize the driver by wrapping around the rib cage and shoulders and spreading the impact over a large area.

A 5-point harness connects the driver to the car, further extending the impact area. It also attaches the driver to the car, causing the car to decelerate at high speeds rather than continue forward until impact.

So the next time you go to the tunes on TV or speed sports, Consider the contributions of the scientists and engineers who work behind the scenes to improve power and safety, as well as some NASCAR physics.

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