# A bicyclist is coasting down a road that is sloped downward at an angle of 8°. The bicycle and bicyclist have a total mass of 80 kg. If the bicycle wheels roll freely, without any effect from friction or air

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1. ## Physics

A bicyclist is coasting down a road that is sloped downward at an angle of 8°. The bicycle and bicyclist have a total mass of 80 kg. If the bicycle wheels roll freely, without any effect from friction or air resistance slowing the motion, how fast would

asked by Pat on November 3, 2011
2. ## physics

A bicyclist is pedaling along a road that is sloped upward with angle theta. At which of these road elevation angles must the bicycle wheels exert the greatest force back on the road to move the bicycle forward at the same constant speed?

asked by marie on October 8, 2014
3. ## physics

a bicyclist is coasting on level ground at 32.35m/s. The bicyclist coasts up an incline of 20.5m at a 30degree angle. How fast is the bicyclist traveling when he grabs the limb?

asked by cynthia on April 8, 2009
4. ## Physics

A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 85.0 kg, and the hill is inclined at 19.0° with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs

asked by Lauren on February 3, 2011
5. ## Physics

A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 55.0 kg, and the hill is inclined at 16.0° with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs

asked by Kelsey on October 25, 2011
6. ## Physics

A bicyclist traveling at 7 m/s rides around an unbanked curve. The coefficient of friction between the tires and the road is 0.38. What is the radius of the shortest turn that the bicyclist can safely make?

asked by Sarah on March 5, 2012
7. ## Physics

A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 80 kg and the hill is inclines at 15 degrees with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist

asked by Morgan on October 9, 2016
8. ## physics

A bicyclist traveling at 8 m/s rides around an unbanked curve. The coefficient of friction (is this static or kinetic friction?) between the tires and the road is 0.42. What is the radius of the shortest turn that the bicyclist can safely make?

asked by Liz on November 12, 2013
9. ## physics

A biker rides on an upward-sloped road inclined at a 15.0° angle with the horizontal. If he moves at a constant speed of 2.0 meters/second for 60 seconds, what is the magnitude of his horizontal displacement?

asked by Anonymous on May 20, 2013
10. ## physics

Radius of Curvature A bicyclist traveling at 8 m/s rides around an unbanked curve. The coefficient of friction (is this static or kinetic friction?) between the tires and the road is 0.36. What is the radius of the shortest turn that the bicyclist can

asked by Amanda on November 9, 2013
11. ## Physics

A bicyclist coasts without pedaling down an incline that makes an angle of 4o with the horizontal at a steady speed of 13 m/s. If the mass of the cyclist and the bike combined is 76 kg, use k-work (not Newton’s second law) to estimate the force of

asked by M on October 6, 2014
12. ## rates

a bicyclist travels for 2h at an average speed of 12km/h. how far does the bicyclist travel ? at this speed how long will it take the bicyclist to at 54km?

asked by rian on November 15, 2013
13. ## physics

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 25.7 minutes at an average speed of 8.82 m/s. During the second part, she rides for 29.6 minutes at an

asked by Anonymous on February 12, 2014
14. ## Physics

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 23.7 minutes at an average speed of 6.31 m/s. During the second part, she rides for 25.0 minutes at an

asked by Emily on February 10, 2015
15. ## physics

A curved road is banked at an angle such that friction is not necessary for a car to stay on the road. a 2500 kg car is traveling at a speed of 25 ms and the road has a radius of curvature equal to 40 m. calculate the magnitude of force that the road

asked by amelia on October 4, 2015
16. ## PHYSICS

A bicycle with 0.80 -diameter tires is coasting on a level road at 5.6 . A small blue dot has been painted on the tread of the rear tire. a)What is the angular speed of the tires? b)What is the speed of the blue dot when it is 0.80 above the road? c)What

asked by FizzaAli ASAP on October 29, 2011
17. ## physics

A motorcycle (mass of cycle plus rider = 3.0 102 kg) is traveling at a steady speed of 20 m/s. The force of air resistance acting on the cycle and rider is 1.8 102 N. Find the power necessary to sustain this speed under the following conditions. (a) the

asked by joshua on October 26, 2010
18. ## chemistry

Why do pure solvents show a level of horizontal curve as solidification occurs, but the curve for the solution sloped downward slightly? Thanks

asked by Tanimura on March 4, 2009
19. ## physics

A man running horizontal road with velocity 8 km/hr. Find the rain falling vertically downward direction. When he increases speed to 12 km/hr he find rain drops are falling at an angle 30' with downward vertically. What will be the velocity of rain?

asked by Sonu on July 28, 2011
20. ## Physics

A child pushes a toy box 4.0 m along the floor with a force of 6.00 N directed downward at an angle 37.0 degrees to the horizontal. (a)How much work does the child do? (b)Would you expect more or less work to be done if the child pulled upward at the same

asked by fluffy on September 10, 2006
21. ## trig

a hedgehog wishes to cross a road without being run over. he observes the angle of elevation of a lamp post on the other side of the road to be 27 degrees from the edge of the road and 15 degrees from a point 10m back from the raod. How wide is the road??

asked by Fiona on October 16, 2010
22. ## Physics

A bicyclist moving at a constant speed takes 10.0 seconds to travel 500 meters down a path inclined 30.0° downward from the horizontal. What is the vertical velocity of this motion?

asked by Lauren01 on February 22, 2012
23. ## calculus

A straight road makes an angle, A of 12 degrees. When the angle of elevation, B, of the sun is 55 degrees, a vertical pole beside the road casts a shadow 7 feet long parallel to the road. Approximate the length of the pole. Round to tow decimal places.

asked by AEF on June 5, 2012
24. ## Physics

What would the equation be for this problem: A bicyclist accelerates at 0.89 m/s/s during a 5 s interval. What is the change in the speed of the bicycle and bicyclist?

asked by Alyonka on February 10, 2012
25. ## physical science

a bicyclist accelerates at 0.89m/s squared during a 5.0 s interval. What is the change in speed of the bicyclist and the bicycle?

asked by Anonymous on February 28, 2012
26. ## physics

What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 31 km/h and the coefficient of static friction between the tires and the road is 0.29?

asked by annamaria on September 28, 2010
27. ## physics

A bicyclist accelerates –0.87 m/s2 during a 3.8 s interval. What is the change in the velocity of the bicyclist and bicycle?

asked by krissy on October 2, 2014
28. ## Physics/Math

A bicyclist travels in a circle of radius 35.0 m at a constant speed of 7.00 m/s. The bicycle-rider mass is 72.0 kg. Calculate the magnitude of the force of friction on the bicycle from the road. Calculate the magnitude of the net force on the bicycle from

asked by COFFEE on February 13, 2007
29. ## Physics/Math

A bicyclist travels in a circle of radius 35.0 m at a constant speed of 7.00 m/s. The bicycle-rider mass is 72.0 kg. Calculate the magnitude of the force of friction on the bicycle from the road. Calculate the magnitude of the net force on the bicycle from

asked by COFFEE on February 12, 2007
30. ## physics

A bicyclist travels in a circle of radius 31.0 m at a constant speed of 5.00 m/s. The bicycle-rider mass is 88.0 kg. (a) Calculate the magnitude of the force of friction on the bicycle from the road. N (b) Calculate the magnitude of the net force on the

asked by Sam on July 15, 2010
31. ## Math

A truck driver estimates that a country road rises 40 cm for every 6 m along the road.What is the angle of inclination of the road? Express your answer to the nearest tenth of a degree.

asked by gagan on January 22, 2009
32. ## physics

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.80 m/s. During the second part, she rides for 36 minutes at an

asked by Hillary on October 8, 2010
33. ## physics

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.80 m/s. During the second part, she rides for 36 minutes at an

asked by Hillary on October 8, 2010
34. ## Math

A road rises 1m for every 15m measured along the road. a. What is the angle of inclination of the road to the nearest degree? b. How far does a car travel horizontally when it travels 15m along the road? Give the answer to the nearest tenth of a metre.

asked by Anonymous on November 15, 2014
35. ## Math

asked by gagan on January 23, 2009
36. ## Physics

A car goes around a curve on a road that is banked at an angle of 30 degrees. Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 24.0 m/s. WHAT IS THE RADIUS OF THE CURVE?

asked by Dwight on November 29, 2009
37. ## Physics

A car goes around a curve on a road that is banked at an angle of 30 degrees. Even though the road is slick the car will stay on the road without any friction between its tires and the road when its speed is 24.0 m/s. WHAT IS THE RADIUS OF THE CURVE?

asked by Alyssa on November 29, 2009
38. ## Physics

A car goes around a curve on a road that is banked at an angle of 33.5 degrees. Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 22.7 m/s. What is the radius of the curve?

asked by Claire on September 19, 2012
39. ## Physics

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.50m/s. During the second part, she rides for 36 minutes at an

asked by Angie on September 29, 2012
40. ## physics

A bicyclist going south 5m/s passes a bicyclist going north a 5 m/s, they have the same?

asked by Ronnie on August 14, 2010
41. ## physics

A bicyclist going south at 5 m/s passes a bicyclist going north at 5 m/s, they have the same?

asked by cham on May 22, 2010
42. ## Math

A road worker holds a flag in position R with an out strech arm. He swings the flag downward and it forms angle of 30degrees with the ground P. His shoe Q is 2,5 away from P. His head is 24cm above his shoulder. calculate the height of the man

asked by vivi on May 2, 2013
43. ## physics

A car goes around a curve on a road that is banked at an angle of 30.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?

asked by Kathryn on May 19, 2011
44. ## Physics

A car goes around a curve on a road that is banked at an angle of 32.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?

asked by Erik on October 4, 2011
45. ## Physics

You have 2 photos of a bicyclist. One shows the rider at the corner of Third and Main streets, the other shows the rider at Twentieth and Main. There are lampposts at every corner in this town, and the first picture shows it to be 10:32:00 exactly. The

asked by Hannah on January 22, 2012
46. ## Physics

Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the

asked by Jody on June 14, 2013
47. ## physics

Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the

asked by sierra on October 1, 2012
48. ## Physics

Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the

asked by Garcia on October 5, 2012
49. ## physics

First off, thanks a lot for your help. Secondly, will you do it again? A bicyclist traveling with speed v = 3.2m/s on a flat toad is making a turn with radius r = 2.8 m. The forces acting on the cyclist and cycle are the normal force (N) and friction force

asked by dear drwls on April 13, 2008
50. ## physics

Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the

asked by tom on September 21, 2010
51. ## Pre-Calculus-Trig

A straight road slopes at an angle of 10 degrees with the horizontal. When the angle of elevation of the sun (from horizontal) is 62.5 degrees, a telephone pole at the side of the road casts a 15 foot shadow downhill, parallel to the road. How high is the

asked by Chloe Mack on January 31, 2011
52. ## physics

A truck with a mass of 2.00x10^3 kg is coasting along a straight level road at 250.0 m/s. It comes to rest in 300.0m. How much work is done by friction in bring the truck to a stop?

asked by Anonymous on May 20, 2016
53. ## college physics

a bicyclist rides off a flat roof at 13.4m/s, the roof is 3.6m above the ground, how far from the edge of the building does the bicyclist land? round the answer to the nearest meter.

asked by susan on March 29, 2013
54. ## math

A bicyclist rides off a roof at 15.2 \frac{m}{s}. The roof is 9.8 m above the ground. How far from the edge of the building does the bicyclist land? Use SI units in the second box.

asked by sonya on September 15, 2014
55. ## Physics

A bicyclist accelerates -0.87 m/s/s during a 3.8 s interval. What is the change in velocity of the bicyclist and the bicycle? For this problem, I used the formula 'change in v = a x t" and came up with -3.306 m/s as my answer. Is this right?

asked by Lindsay on September 14, 2007
56. ## trig

On an inclined road, which makes an angle of 25 degrees with the horizontal plane, stands a vertical tower. At a point Q, 150 ft from the base of the tower down the road, the angle of elevation to the top of the tower is 65. How high is the tower?

asked by Jendey on May 7, 2014

At 9:00 on Saturday morning, two bicyclists heading in opposite directions pass each other on a bicycle path. The bicyclist heading north is riding 5 km/hour faster than the bicyclist heading south. At 10:30, they are 40.5 km apart. find both of their

asked by Rebecca on January 4, 2012
58. ## physics

A bicyclist moving at a constant speed takes 10.0 seconds to travel 500 meters down a path inclined 30.0° downward from the horizontal. What is the vertical velocity of this motion?Select one of the options below as your answer: A. 18.3 meters/second B.

asked by Anonymous on May 25, 2012
59. ## Physics

A 410 kg race car is rounding a curve in the road which is banked at an angle of 23.4 degrees from the horizontal. Assume that there has just been a massive snowfall and the road’s surface is frictionless. What must the radius of the curve be if the car

asked by Catherine on April 21, 2016
60. ## geometrey

The grade of a road is 7%. What angle does the road make with the horizontal? I'm confused!! What is the grade of a road? Thanks for the help!

asked by anna on March 11, 2008
61. ## trig

A road has a 10% grade (slope). To the nearest degree what is the angle of elevation of the road? should I use sin?

asked by danielle on May 27, 2014
62. ## math

A 1.6 km road rises 400 m. What is the angle of elevation of the road to the nearest degree?

asked by danielle on May 28, 2014
63. ## trig

A road has a 10% grade (slope). To the nearest degree what is the angle of elevation of the road?

asked by Lake on July 14, 2015
64. ## Physics

What is the horizontal component of the force of an object sloped at a 45° angle. pulling with a force of 110N.

asked by anon on November 13, 2014
65. ## science physics

A chicken decides to cross a road. The road is perfectly straight, runs north-south, and is full of cars driving by from south to north. The cars have a log-normal distribution for the distance between each car. However, the cars all travel at 80 km/hr.

asked by phys on June 17, 2013
66. ## trig

A mountain road makes an angle θ = 8.4° with the horizontal direction. If the road has a total length of 3.4 km, how much does it climb? That is, find h.

asked by gavin on February 1, 2013
67. ## geometry

A road climbs at an 8 degree angle with the horizontal. What is the grade of the road?

asked by Anonymous on February 12, 2011
68. ## Geometry

A road climbs at an 8 degree angle with the horizontal. What is the grade of the Road.

asked by Rose on February 10, 2011
69. ## Trig

a road is inclined at an angle of 45degrees. After driving 300 feet along this road, find the driver's increase in altitude.

asked by Scott on February 19, 2016
70. ## Geometry

A road 1.6 km long rises 400 m. What is the angle of elevation of the road? I don't known which numbers go to which sides. I can do the rest once I can label the triangle. Thanks!

asked by anna on March 13, 2008
71. ## physics

A road is inclined at an angle of 9 degrees with the horizontal. After driving 10,000 feet along this road, find the driver's increase in altitude?

asked by Diane on July 20, 2010
72. ## physics

A truck of mass 8,000kg is traveling along a level road at an initial speed of 25m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13m/s.

asked by KAthryn on April 9, 2013
73. ## Trig

A straight road slopes upward 14 degrees from the horizontal. A vertical telephone pole beside the road casts a shadow of 60 feet down the road. if the angle of elevation of the sun is 55 degrees, what is the height of the telephone pole?

asked by Keserie on February 17, 2014
74. ## AS Physics

A driver leaves his car without applying the hand brakes on a road inclined at an angle of 25 degrees. The car starts to roll down the road with the driver chasing from behind after moving a distance of 20 m the speed of the car is 5.0 ms-1. Calculate the

asked by Ariana on October 4, 2014
75. ## Physics

A 1.40 kg skateboard is coasting along the pavement at a speed of 5.5 m/s when a 0.800 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination.

asked by Jessica on February 4, 2014
76. ## math trigonometry

two straight roads intersect to form an angle of 75 degree. find the shortest distance from one road to a gas station on the other road 1000 m from the junction.

asked by jerra on July 10, 2017
77. ## physics

A(n) 2165.7 kg car is coasting along a level road at 35.5 m/s. A constant braking force is applied, such that the car is stopped in a distance of 52.7 m. What is the magnitude of the braking force? Answer in units of N.

asked by Saykar on November 23, 2015
78. ## physics

A(n) 1949.1 kg car is coasting along a level road at 22.9 m/s. A constant braking force is applied, such that the car is stopped in a distance of 74.6 m. What is the magnitude of the braking force? Answer in units of N

asked by Anonymous on November 24, 2014
79. ## physics

A(n) 2153 kg car is coasting along a level road at 34.4 m/s. A constant braking force is applied, such that the car is stopped in a distance of 61.8 m. What is the magnitude of the braking force? Answer in units of N

asked by colton on November 9, 2015
80. ## physics

A(n) 1949.1 kg car is coasting along a level road at 22.9 m/s. A constant braking force is applied, such that the car is stopped in a distance of 74.6 m. What is the magnitude of the braking force? Answer in units of N

asked by mb, hnb on November 24, 2014
81. ## physics

worker stands still on a roof sloped at an angle of 30° above the horizontal. He is prevented from slipping by a static frictional force of 560 N. Find the mass of the worker.

asked by chidera on September 24, 2014
82. ## physics

A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find the mass of the worker.

asked by Anonymous on February 4, 2011
83. ## physics

A worker stands still on a roof sloped at an angle of 43° above the horizontal. He is prevented from slipping by a static frictional force of 520 N. Find the mass of the worker.

asked by Tyler on January 11, 2017
84. ## physics

A 1.22 kg skateboard is coasting along the pavement at a speed of 5.84 m/s when a 1.20 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

asked by Jake on December 15, 2015
85. ## Physics

A 1.25 kg skateboard is coasting along the pavement at a speed of 4.24 m/s when a 1.00 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

asked by Keelan on December 9, 2011
86. ## Physics

A 1.08 kg skateboard is coasting along the pavement at a speed of 5.30 m/s when a 1.05 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

asked by Daijha on January 10, 2014
87. ## Physics

A 1.08 kg skateboard is coasting along the pavement at a speed of 4.60 m/s when a 1.19 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

asked by Angela on October 22, 2012
88. ## physics

A 1.13 kg skateboard is coasting along the pavement at a speed of 4.28 m/s when a 0.93 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

asked by Najah on December 13, 2013
89. ## physics

A 75g person on skis is going down a hill sloped at an angle 30.the coefficient of kinetic friction between the skis and the snow is 0.15.how fast is the skier going 10s after starting from rest?

asked by Anonymous on November 6, 2011
90. ## Physics

A daredevil decides to jump a canyon of width 10 m. To do so, he drives a motorcycle up an incline sloped at an angle of 15 degrees. What minimum speed must he have in order to clear the canyon?

asked by nam maurer on November 22, 2011
91. ## Physics

A daredevil decides to jump a canyon of width 10 m. To do so, he drives a motorcycle up an incline sloped at an angle of 15 degrees. What minimum speed must he have in order to clear the canyon?

asked by Susan on January 11, 2012
92. ## Physics

A truck of mass 8,000 kg is traveling along a level road at an initial speed of 25 m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13 m/s. (a) Find the total work done on the truck.

asked by Chelsea on September 28, 2013
93. ## physics

A curve of radius 60m is banked so that a car traveling with uniform speed 70km/hr can round the curve without relying on friction to keep it from slipping to its left or right. The acceleration of gravity is 9.8m/s^2. What the the Angle of the curve? im

asked by puff puff on September 17, 2006
94. ## Physics

A wooden block of mass 9 kg is at rest on an inclined plane sloped at an angle theta from the horizontal. The block is located 5 m from the bottom of the plane. A) Find the frictional force for theta = 20 B)If the angle is increased slowly the block starts

asked by Olivia on September 28, 2016
95. ## Physics

A bicyclist on an old bike (combined mass: 96 kg) is rolling down (no pedaling or braking) a hill of height 103 m. Over the course of the 278 meters of downhill road, she encounters a constant friction force of 323 Newton. If her speed at the top of the

asked by Layla on October 31, 2010
96. ## physics

A 1.5 kg chunk of ice slides down a roof sloped at a 60 degree angle with the horizontal. If there is no friction, determine the acceleration of the ice. Show that the amount of mass doesn't matter in part a.

asked by caroline on October 27, 2010
97. ## Pls help me now

A 75g person on skis is going down a hill sloped at an angle 30.the coefficient of kinetic friction between the skis and the snow is 0.15.how fast is the skier going 10s after starting from rest?(answer=36m/s)

asked by Henneh on November 6, 2011
98. ## Physics

A daredevil decides to jump a canyon of width 4.22 m. To do so, he drives a motorcycle up an incline sloped at an angle of 12.4◦. The acceleration of gravity is 9.8 m/s. What minimum speed must he have in order to clear the canyon? Answer in units of

asked by Peyton on September 16, 2016
99. ## physics

A daredevil decides to jump a canyon. It's walls are equally high and 13 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 18°. What minimum speed must he have in order to clear the canyon?

asked by Anonymous on October 4, 2012
100. ## physics

A daredevil decides to jump a canyon of width 8.4 m. To do so, he drives a motorcycle up an incline sloped at an angle of 12.6 ◦ . The acceleration of gravity is 9.8 m/s 2 . What minimum speed must he have in order to clear the canyon? Answer in units of

asked by Anonymous on November 19, 2012