0 A session.masteringphysics.com OG Course Home MasteringPhysics: Chapter 3 Sess

Question

0 A session.masteringphysics.com OG Course Home MasteringPhysics: Chapter 3 Session.masteringphysics.com Course Home Mastering... | Chegg.com + v Correct Constants A physics book slides off a horizontal table top with a speed of 1.50 m/s. It strikes the floor after a time of 0.450 s. Ignore air resistance. Part E Find the magnitude of the book's velocity just before the book reaches the floor. Express your answer with the appropriate units. HuÅ 6 + 0 ? 6.414 m Submit Previous Answers Request Answer * Incorrect; Try Again; 2 attempts remaining Part F Find the direction of the book's velocity just before the book reaches the floor. 10 A2 6 0 M ? ° below the horizontal

Explanation / Answer

e)

Horizontal and Vertical components of final velocity

Vfx=Vox =1.5 m/s

Vfy=Voy+ayt =0+(-9.8)*0.45=-4.41 m/s

Magnitude of book's Velocity

Vf =sqrt(1.52+4.412)=4.658 m/s

f)

Direction

o=tan-1(-4.41/1.5)

o=-71.2o =71.2o(below the horizontal)

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