3. A skateboarder moves uniformly at 3.5 m/s horizontally when he arrives at the top of a hill (angle of 24"). The coefficient of friction of the hill is 0.25. If he rolls down a distance of 7.5m how fast will be be moving at the bottom? 7.5m

3. A skateboarder moves uniformly at 3.5 m/s horizontally when he arrives at the top of a hill (angle of 24"). The coefficient of friction of the hill is 0.25. If he rolls down a distance of 7.5m how fast will be be moving at the bottom? 7.5m

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 56AP: Keratinocytes are the most common cells in the skins outer layer. As these approximately circular...

See similar textbooks

Related questions

Q: During a steady right turn, a person exerts the forces shown on the steering wheel. Note that each…

A: Here, first we have to calculate the tangential component of the forces on the wheel and multiplying…

Q: Find the total clockwise and anticlockwise moments for these seesaws. Which side will tip down-the…

Q: person

A: A basketball shooting arm model is used to estimate arm joint motions for a set of desired release…

Q: 3. A downhill skier, whose mass is 50.0 kg, attains a speed of 21.0m/s just as she reaches the point…

A: When an object moves in a circle, then a fictitious force acts on the object. It is called…

Q: A car of mass m=1500kg is moving down a level road. It comes to a hill whose cross section is semi…

Q: Two bugs, Buzz and Crunchy, are siting on a spinning disk on a horizontal plane. Buzz is sitting…

A: Given that:ω=38 rpm=38×2π60=3.98 rad/sμs=0.80 μk=0.60R=0.80 mmBuzz=2.0 kg The maximum value of…

Q: iii) A tire is rolling along a road, without slipping, with a velocity v. A piece of tape is…

Q: You drive a car around a flat circular track at a speed of 27 m/s without slipping. The radius of…

A: Given Speed of car ,v = 27 m/s Radius of track ,R = 382 m Mass of car ,M = 1000 kg Concept used…

Q: Flying Circus of Physics When a slice of buttered toast is accidentally pushed over the edge of a…

Q: A 2.00X103kg car rounds a circular turn of radius20,0 m. If the road is flat and the coefficient of…

A: Solution: Given that, Mass of the car(m)=2000 Kg Circular turn of radius(r)=20 m Coefficient of…

Q: A 45.7-kg boy on a swing moves in a circular arc of radius 3.80 m. At the lowest position, the…

Q: 3/56 A "swing ride" is shown in the figure. Calculate the necessary angular velocity for the swings…

Q: 5. A force P = mg/6 is required to lower the cylinder at a constant slow speed with the cord making…

Q: 5. A woman is whirling a 2.75 kg rock attached to a string around in a circle above her head. The…

A: Given : mass of the rock, m=2.75 Kg radius of the horizontal circle, r=16.3 cm=0.163 m speed of the…

Q: 5. A metal hoop with a diameter of 10 cm is released from rest on top of an inclined plane and 1…

Q: 1. A ferris wheel with a 20 m radius and tangential speed of 4 m/s has all 70 kg of you riding it.…

A: Here, we use the dynamics of circular motion to get required.

Q: 12. A car magazine reports that a 1100 kg car has skid pad results of 0.80 g. This is an indication…

Q: 24) A lab centrifuge runs at 6.00 × 103 revolutions per minute and has a radius of 15.0 cm. What is…

A: Please refe the below image for the calculations

Q: The wheel in the figure has eight equally spaced spokes and a radius of 40 cm. It is mounted on a…

Q: Three solid objects – a large wooden ball, a small steel ball, and a large steel ball – are placed…

Q: A road with a radius of 75.0 m is banked so that a car can navigate the curve at a speed of 13.2 m/s…

Q: ii) When a rigid body rotates about a fixed axis, all the points in the body have the same a. linear…

A: Translation and rotation are 2 types of motion for any rigid body. A net force is required for…

Q: 0.31kg cart on a horizontal air track is attached to a string. The string passes over a disk-shaped…

A: Write a given values of this question. Mass of the cart. m1=0.341kg Mass of the disk shaped pulley.…

Q: 3. A 50 N ball is rolling down a plane with an incline of 0=35° without slipping as shown. The…

A: Write the given values to the suitable variables.Here, W is the weight of the ball.

Concept explainers

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.

Question

3. A skateboarder moves uniformly at 3.5 m/s horizontally when he arrives at the top
of a hill (angle of 24°). The coefficient of friction of the hill is 0.25. If he rolls
down a distance of 7.5m how fast will be be moving at the bottom?
7.5m

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

An automobile with 0.260 m radius tires travels 80,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear?
A point on a rotating turntable 20.0 cm from the center accelerates from rest to a final speed of 0.700 m/s in 1.75 s. At t = 1.25 s, find the magnitude and direction of (a) the radial acceleration, (b) the tangential acceleration, and (c) the total acceleration of the point.
A large centrifuge, like the one shown in Figure 6.37(a), is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. (a) At what angular velocity is the centripetal acceleration 10 g if the rider is 15.0 m from the center of rotation? (b) The rider's cage hangs on a pivot at the end of the arm, allowing it to swing outward during rotation as shown in Figure 6.37(b). At what angle below the horizontal will the cage hang when the centripetal acceleration is 10 g? (Hint: The arm supplies centripetal force and supports the weight of the cage. Draw a free body diagram of the forces to see what the angle should be.) Figure 6.37 (a) NASA centrifuge used to subject trainees to accelerations similar to those experienced in rocket launches and reentries. (credit: NASA) (b) Rider in cage showing how the cage pivots outward during rotation. This allows the total force exerted on the rider by the cage to be along its axis at all times.
A child lying on her back experiences 55.0 N tension in the muscles on both sides of her neck when she raises her head to look past her toes. Later, sliding feet first down a water slide at terminal speed 5.70 m/s and riding high on the outside wall of a horizontal curve of radius 2.40 m, she raises her head again to look forward past her toes. Find the tension in the muscles on both sides of her neck while she is sliding.
In Example 2.6, we considered a simple model for a rocket launched from the surface of the Earth. A better expression for the rockets position measured from the center of the Earth is given by y(t)=(R3/2+3g2Rt)2/3j where R is the radius of the Earth (6.38 106 m) and g is the constant acceleration of an object in free fall near the Earths surface (9.81 m/s2). a. Derive expressions for vy(t) and ay(t). b. Plot y(t), vy(t), and ay(t). (A spreadsheet program would be helpful.) c. When will the rocket be at y=4R? d. What are vy and ay when y=4R?
A cyclist rides a bicycle with a wheel radius of 0.500 m across campus. A piece of plastic on the front rim makes a clicking sound every time it passes through the fork. If the cyclist counts 320 clicks between her apartment and the cafeteria, how far has she traveled? (a) 0.50 km (b) 0.80 km (c) 1.0 km (d) 1.5 km (e) 1.8 km
A flea is at point on a horizontal turntable, 10.0 cm from the center. The turntable is rotating at 33.3 rev/min in the clockwise direction. The flea jumps straight up to a height of 5.00 cm. At takeoff, it gives itself no horizontal velocity relative to the turntable. The Ilea lands on the turntable at point . Choose the origin of coor-dinates to be at the center of the turntable and the positive xaxis passing through at the moment of takeoff. Then the original position of the flea is 10.0i cm. (a) Kind die position of point when die Ilea lands. (b) Find die position of point when the flea lands.
An ultracentrifuge accelerates from to 100,000 rpm in 2.00 min. (a) What is the average angular acceleration in rad/s2 ? (b) What is the tangential acceleration of a point 9.50 cm from the axis of rotation? (c) What is the centripetal acceleration in m/s2 and multiples of g of this point at full rpm? (d) What is the total distance travelled by a point 9.5 cm from the axis of totation of the ultracentrifuge?
What is the average speed in mi/h of a person at the equator as a result of the Earths rotation? (Take the radius of the Earth to be RE = 4000 mi.)
The dung beetle is known as one of the strongest animals for its size, often forming balls of dung up to 10 times their own mass and rolling them to locations where they can be buried and stored as food. A typical dung ball formed by the species K. nigroaeneus has a radius of 2.00 cm and is rolled by the beetle at 6.25 cm/s. (a) What is the rolling balls angular speed? (b) How many full rotations are required if the beetle rolls the ball a distance of 1.00 m?
Harry Potter decides to take Pottery 101 as an elective to satisfy his arts requirement at Hog warts. He sets some clay (m = 3.25 kg) on the edge of a pottery wheel (r = 0.600 m), which is initially motionless. He then begins to rotate the wheel with a uniform acceleration, reaching a final angular speed of 2.400 rev/s in 3.00 s. a. What is the speed of the clay when the initial 3.00 s has passed? b. What is the centripetal acceleration of the clay initially and when the initial 3.00 s has passed? c. What is the magnitude of the constant tangential acceleration responsible for starting the clay in circular motion?
In Example 4.6, we found the centripetal acceleration of the Earth as it revolves around the Sun. From information on the endpapers of this book, compute the centripetal acceleration of a point on the surface of the Earth at the equator caused by the rotation of the Earth about its axis.