3 Paddy O'Paddle and his boat have a mass of 125 kg together. The boat weighs 417 N. a) What is the mass of the boat? b) What is the combined weight of Paddy and his boat? ) What is Paddy's weight? d) As he goes over a waterfall in the boat, Paddy's acceleration is 6.5 m/s'. What is the upward force on Paddy and his boat due to air resistance as they fall?

3 Paddy O'Paddle and his boat have a mass of 125 kg together. The boat weighs 417 N. a) What is the mass of the boat? b) What is the combined weight of Paddy and his boat? ) What is Paddy's weight? d) As he goes over a waterfall in the boat, Paddy's acceleration is 6.5 m/s'. What is the upward force on Paddy and his boat due to air resistance as they fall?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A book weighing 5 N rests on top of a table. A. A downward force of magnitude 5 N is exerted on the book by the force of _________. (what?) B. An upward force of magnitude _____ is exerted on the _____ by the table. C. Do the downward force and the upward force in the above two constitute a 3rd law pair? D. The reaction to the force in Part A is a force of magnitude _____, exerted on the _____ by the _____. Its direction is _____ . E. The reaction to the force in Part B is a force of magnitude _____, exerted on the _____ by the _____. Its direction is _____. F. Which of Newton's laws could we have used to predict that the forces in Parts A and B are equal and opposite? G. Which of Newton's laws could we have used to predict that the forces in Parts B and E are equal and opposite?
You hold a book at rest in your hand. What is the “reaction force” to the weight of the book? a) The force of gravity from the book on the Earth. b) The force of gravity from the book on your hand. c) The normal force from you hand on the book. d) The normal force from the book on your hand.
4. A block of mass m accelerates up a slope that has friction. a. Draw a free-body diagram for the block indicating all the forces acting on it. (Note that there must be a force acting on the block in order for it to accelerate up the slope.) b. Write down the equations for Newton's 2nd law for both x and y directions. c. Solve for the applied force Fap in terms of the angle of incline 0, mass m, acceleration of the block a, kinetic friction force fr, and acceleration of gravity g.
24. A pickup truck with mass 980 kg is initially at rest. The truck accelerates to a speed of 95 km/hr within a distance of 60 meters. What the direction and size of the force that acts on the truck? a. b. If the truck were carrying a load of 200 kg, what new force would be required to achieve the same acceleration?
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2. A chain consists of identical links, each with a mass of 2.5 kg. You grab the top link and hold the chain at rest so that it hangs vertically. a) Draw a free body diagram of the bottom three links (labeled 1, 2, 3). Label all forces and use double subscript notation to denote which object exerts the force and which object is experiencing the force. b) Find the magnitude of the force exerted on link 1 by link 2, in Newtons. c) Find the magnitude of the force exerted on link 2 by link 3, in Newtons.
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