A0.16 kg pinecone falls 18 m to the ground, where it lands with a speed of 11 m/s. Part A How much work was done on the pinecone by air resistance? Express your answer using two significant figures. Πν ΑΣφ J Submit Request Answer Part B What was the average force of air resistance exerted on the pinecone? Express your answer using two significant figures. Hνα ΑΣφ |F| = Submit Request Answer

A0.16 kg pinecone falls 18 m to the ground, where it lands with a speed of 11 m/s. Part A How much work was done on the pinecone by air resistance? Express your answer using two significant figures. Πν ΑΣφ J Submit Request Answer Part B What was the average force of air resistance exerted on the pinecone? Express your answer using two significant figures. Hνα ΑΣφ |F| = Submit Request Answer

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Energy Of A System

Section: Chapter Questions

Problem 7.8OQ: An a simple pendulum swings back and forth, the forces acting on the suspended object are (a) the...

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