that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from the Sun on a cost-free but slow trip. Suppose that the spacecraft has a mass of 900 kg and receives a push of 20 N. (a) What is the magnitude of the resulting acceleration? If the craft starts from rest, (b) how far will it travel in 1 day and (c) how fast will it then be moving?

that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from the Sun on a cost-free but slow trip. Suppose that the spacecraft has a mass of 900 kg and receives a push of 20 N. (a) What is the magnitude of the resulting acceleration? If the craft starts from rest, (b) how far will it travel in 1 day and (c) how fast will it then be moving?

Name: 25 •25 Sunjamming. A “sun yacht" is a spacecraft with a large sailthat
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Description: 25 •25 Sunjamming. A “sun yacht" is a spacecraft with a large sailthat is pushed by sunlight. Although such a push is tiny in everydaycircumstances, it can be large enough to send the spacecraftoutward from the Sun on a cost-free but slow trip. Suppo

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 9OQ: A child is practicing for a BMX race. His speed remains constant as he goes counterclockwise around...

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A "sun yacht" is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from the Sun on a cost-free but slow trip. Suppose that the spacecraft has a mass of 975 kg and receives a push of 31 N. What is the magnitude of the resulting acceleration? If the crafts starts from rest how far will it travel in 1 day? How fast will it be moving after 1 day?
Only one force acts on an object.Can the object have zeroacceleration? Can it have zero velocity? Explain.
Two toy cars 16kg and 2.0kg are released simultaneously on an inclined frictionless plane that makes an angle of 30 degrees with the horizontal describe their acceleration after being released ?
Show that the acceleration of any object down an incline where friction behaves simply (that is, where fk=μkN)fk=μkN) is a=g(sinθ−μkcosθ).a=g(sinθ−μkcosθ). Note that the acceleration is independent of mass and reduces to the expression found in the previous problem when friction becomes negligibly small (μk=0).(μk=0).
Can you give a practical example of how a body can still accelerate even without changing its speed? If you can, give me an example and an explanation of it
A bird flying at 45 m/s, 100 m above sea level, drops an acorn of 1 kg upon his unsuspecting victims below. A Southeasterly wind causes the acorn to accelerate at 10 m/s^2 with the wind. Where does the acorn land? Assume air resistance is negligible and a gravitational acceleration of 10 m/s^2.
A curling rock of mass 20 kg is sliding along a frictionless ice surface when it strikes a rock half its mass, giving the rock an instantaneous acceleration of 8.0 m/s2 [W]. According to Newton’s Third Law, the 20 kg rock will experience an acceleration of
A Chinook salmon can swim underwater at 3.58 m/s, and it can also jump vertically upward, leaving the water with a speed of 6.26 m/s. A record salmon has length 1.50 m and mass 61.0 kg. Consider the fish swimming straight upward in the water below the surface of a lake. The gravitational force exerted on it is very nearly canceled out by a buoyant force exerted by the water. The fish experiences an upward force P exerted by the water on its threshing tail fin and a downward fluid friction force that we model as acting on its front end. Assume the fluid friction force disappears as soon as the fish’s head breaks the water surface and assume the force on its tail is constant. Model the gravitational force as suddenly switching full on when half the length of the fish is out of the water. Find the value of P.
Professional Application - A car moving at 10 m/s crashes into a tree and stops in 0.26 s. Calculate the force the seat belt exerts on a passenger in the car to bring him to a halt. The mass of the passenger is 70 kg.
Professional Application: A woodpecker’s brain is specially protected from large decelerations by tendon-like attachments inside the skull. While pecking on a tree, the woodpecker’s head comes to a stop from an initial velocity of 0.600 m/s in a distance of only 2.00 mm. (a) Find the acceleration in and in m/s multiples of g (g = 9.80 m/s). (b) Calculate the stopping time. (c) The tendons cradling the brain stretch, making its stopping distance 4.50 mm (greater than the head and, hence, less deceleration of the brain). What is the brain’s deceleration, expressed in multiples of ?
A 7-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 2.1 m/s to the right. The coefficient of friction between the pond and the toboggan is 0.17. Determine the distance that the toboggan slides before coming to rest.
A child is practicing for a BMX race. His speed remains constant as he goes counterclockwise around a level track with two straight sections and two nearly semicircular sections as shown in the aerial view of Figure OQ5.9. (a) Rank the magnitudes of his acceleration at the points A, B, C, D, and E from largest to smallest. If his acceleration is the same size at two points, display that fact in your ranking. If his acceleration is zero, display that fact. (b) What are the directions of his velocity at points A, B, and C? For each point, choose one: north, south, east, west, or nonexistent. (c) What are the directions of his acceleration at points A, B, and C? Figure OQ5.9