Physics Fundamentals
Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 4, Problem 41P
To determine

To Find: Direction and magnitude of acceleration of child B.

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A 9 kg object starting from rest falls througha viscous medium and experiences a resistiveforce R = −b v, where v is the velocity of theobject.The acceleration of gravity is 9.8 m/s^2.a) If the object’s speed reaches one-half its terminal speed in 5.24s, determine the terminalspeed.Answer in units of m/s. b) At what time is the speed of the object threefourths the terminal speed?Answer in units of s. c) How far has the object traveled in the first 5.24s of motion?Answer in units of m.
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A ball is thrown from the top of a tower at an angle of 40o to the horizontal with an initial speed of 6.60 m/s.  During its flight, the only force acting on the ball is the force of gravity.  It takes 3.55 s until the ball hits the ground.  How tall is the tower?
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