33. Three identical pucks, A, B, and C, are sliding across ice at the given speeds. The forces of air and ice friction are negligible. a. Rank the pucks by the force needed to keep them moving, from greatest to least. b. Rank the pucks by the force needed to stop them in the same time interval, from greatest to least. 2 m/s 4 m/s 6 m/s A B C

33. Three identical pucks, A, B, and C, are sliding across ice at the given speeds. The forces of air and ice friction are negligible. a. Rank the pucks by the force needed to keep them moving, from greatest to least. b. Rank the pucks by the force needed to stop them in the same time interval, from greatest to least. 2 m/s 4 m/s 6 m/s A B C

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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You find yourself stranded on the middle of a frozen pond. The surface is so slick you are unable to get any traction. In an effort to save yourself, you take off your boot and throw it toward the west. This results in... A. you staying put. B. you sliding off to the east slower than the boot's speed. C. you sliding off to the east faster than the boot's speed. D. you sliding off to the west faster than the boot's speed. E. you sliding off to the west slower than the boot's speed.
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9. True or False questions. Circle the correct answer. a. An example of a Vector is Temperature. TRUE or FALSE b. In a vacuum, Heavier objects fall faster than lighter objects. TRUE or FALSE C. X values and Y values can be determined independently when performing calculations using Galileo's kinetic equations. TRUE or FALSE d. Static friction is a force that applied to object that is stationary. TRUE or FALSE e. When a spring is compressed, the spring is said to have potential energy. TRUE or FALSE f. A car crash is an example of an Impulse. TRUE or FALSE g. Centripetal force is not a new force. It is any combination of forces that cause an object to follow a path of circular motion. TRUE or FALSE h. Consider the following shapes: Cylinder, Hoop, Solid sphere, and spherical shell. The cylind has the greatest inertia. TRUE or FALSE
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Researchers often use force plates to measure the forces that people exert against the floor during movement. A force plate works like a bathroom scale, but it keeps a record of how the reading changes with time. Shown is the data from a force plate as a woman jumps straight up and then lands.a. What was the vertical component of her acceleration during push-off?b. What was the vertical component of her acceleration while in the air?c. What was the vertical component of her acceleration during the landing?d. What was her speed as her feet left the force plate?e. How high did she jump?
3. A block slides down a frictionless plane having an inclination of = 20.0°. The block starts from rest at the top, and the length of the incline is 2.00 m. a. Draw a free-body diagram of the block. b. Find the acceleration of the block, and c. Its speed when it reaches the bottom of the incline.