Concept explainers
Texas Motor Speedway On October 28, 2000 Gil de Ferran set the single-lap average speed record for the then-named California Speedway –241.428 mi /h. The following year, on April 29, 2001, the Championship Auto Racing Teams (CART) organization canceled the inaugural Firestone Firehawk 600 race at the Texas Motor Speedway 2 hours before it was to start. During practice, drivers became dizzy when they reached speeds of more than 230 mph on the high-banked track. The Texas Motor Speedway has turns banked at
In qualifying runs for the race, 21 of 25 drivers complained of dizziness and disorientation. They experienced accelerations of
The average speed reported in the reading passage has six significant digits, implying that the speed is known to within
Want to see the full answer?
Check out a sample textbook solutionChapter 5 Solutions
College Physics
Additional Science Textbook Solutions
University Physics (14th Edition)
University Physics Volume 2
College Physics: A Strategic Approach (3rd Edition)
Conceptual Integrated Science
Cosmic Perspective Fundamentals
Introduction to Electrodynamics
- A race car with a mass of 750kg is traveling at a constant speed of 75m/s around a circular track of an radius of 50m. A-what is the direction and the magnitude of the centripetal acceleration of the racecar? B- what happens to the centripetal force of the car if the speed is doubled?arrow_forwardA car with a constant speed of 95 km/h enters a circular flat curve with a radius of 0.5 km. The friction between the road and the car's tire can supply a centripetal acceleration of 1.35 m/s². What is the acceleration the car need to remain in this curve regardless of its acceleration of 1.35 m/s²? a) 2.39 m/s² b) 1.74 m/s² c) 1.35 m/s² d) 1.39 m/s² V₁ = V + at лd²h V= C=d F = ma ac r x=x+(+v₁)t +mgh+Fyud F rarrow_forward9) A bicyclist rides on a circular track. The coefficient of friction between the wheels and the track is 0.8. If the bicyclist maintains a constant speed of 15 m/s, what is the minimum radius of the track so that the bicyclist's wheels will not slip? 10) An object in uniform circular motion makes 15 revolutions every 6 seconds. If its centripetal acceleration is 4.5 m/s², what is the radius of its motion?arrow_forward
- 9. Melissa and Cody are on a fun fair ride that spins them in a circle with radius 6 meters. If Melissa has a mass of 55 kg and Cody has a mass of 65 kg, what centripetal force will they have together if they have an acceleration of 2.2 m/s2?arrow_forward2. A car travels at a constant speed around a circular track whose radius is 3 km. The car goes once around the circular track in a time of 7 minutes. What is the magnitude of the centripetal acceleration of the car?arrow_forward7. A car travels at a constant speed around a circular track whose radius is 2.6 km. The car goes around the track in 360 s. What is the magnitude of the centripetal acceleration of the car? Answer: ... *.......arrow_forward
- A skater is trying to perform a Triple revolution jump. His vertical take off speed is 2.8 m/s. How fast does he need to rotate to complete the triple revolution in the air? (in rotation per second) Assuming g=9.8 m/s² Your Answer: Answerarrow_forwardA 50 Gram sample of Uranium ore is put into a centrifuge that runs at 30,000 rpm. If the radius of the ore's path is 25 cm, Then how many g's of acceleration does the uranium ore experience? a) 2.5 x10^6 g's b) 1.4 x10^5 g's c) 1.4 x 10^6 g's d) 2.5 x10^5 g's e) 4.8 x10^7 g'sarrow_forwardCIRCULAR MOTION 1. A centrifuge spins a suspension at 2500 rpm (revolutions per minute) in a radius of 20 cm. What is the acceleration of the suspension? 2. When you take your 1200-kg car out for a spin, you go around a corner of radius 57 m with a speed of 15 m/s. Assuming your car doesn't skid, what is the force exerted on it by static friction? 4740 N (my teacher's answer)arrow_forward
- 8. How is it possible that a body moves at a constant speed and is still in accelerating motion? 9. When a car is going around a circular track with constant speed, what provides the centripetal force necessary for circular motion?arrow_forward1.Circular Motion: Your evil cousin Throckmorton has come to visit for the weekend. His favourite pastime is skateboarding. You observe him skateboard from rest down a curved, frictionless ramp. If we treat Throckmorton and his skateboard as a particle, he moves through a quarter circle with radius 3.00m. Throcky and his skateboard have a mass 25.0kg. (a) Find his speed at the bottom of the ramp.(b) Find the normal force that acts on him at the bottom of the curve.arrow_forwardQuestion 8 A car is travelling into an unbanked turn with radius of 11.0 m. The coefficient friction is 1.4. What is the maximum speed the car can travel and still be able to maintain a circular path? Answer in m/s to one decimal place. Your Answer: Answer Question 9 A ball on the end of a string is swung in a vertical circle. The length of the string is 0.4 m. What is the minimum speed required to maintain the circular motion? Answer in m/s to one decimal place. Your Answer: Answer unitsarrow_forward
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College