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ASU PHY 121 Exam 2 Questions with Verified Correct Answers

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ASU PHY 121 Exam 2 Questions with Verified Correct Answers

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2026/2027

Institution ENT 101

Course ENT 101

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ASU PHY 121 Exam 2 Questions with Verified Correct Answers

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ASU PHY 121 Exam 2 Questions with Verified
Correct Answers
Friction

Non-conservative force between two object surfaces

Friction Formula

Ff=(mu)Fn

Coefficient of Friction

(mu)s or (mu)k for maximum static friction or kinetic friction

Centripetal Acceleration

Acceleration for Circular Motion

Centripetal Acceleration Formula

ac=v^2/r

Scalar/Dot Product

ABcos(Φ)

Work

Force applied over a distance

Work Formula

Fscos(Φ)

Work-Kinetic Energy Theorem

ΣW=ΔKE

, Work-Force Relationship

W=∫Fds

Uniform Circular Motion

Constant angular velocity and centripetal acceleration (Work done in one revolution is 0)

Nonuniform Circular Motion

Nonconstant angular velocity (Work done in one revolution is (2πr*F)

Area under the Force vs. Distance graph

Total work done

Kinetic Energy

KE=(1/2)m*v^2

Spring Force

Fs=-kx

Work done by Spring

Ws=(1/2)kx^2

Work done by Gravity

W=-mgh

Conservative Forces

Reversible, path-independent forces (gravity, elastic forces)

Nonconservative Forces

Non-reversible, path-dependent forces (tension, friction)

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Uploaded on: October 9, 2026
Number of pages: 5
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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