MT1 Review 2 - From: <Saved by Windows Internet Explorer...

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From: <Saved by Windows Internet Explorer 7> Subject: MT1SundayReview Date: Wed, 13 Dec 2006 12:28:18 -0800 MIME-Version: 1.0 Content-Type: multipart/related; type="text/html"; boundary="----=_NextPart_000_0025_01C71EB2.2B8B9B50" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X This is a multi-part message in MIME format. T ------=_NextPart_000_0025_01C71EB2.2B8B9B50 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Location: http://panic.berkeley.edu/~jessica/phys7a/MT1SundayReview.html C =EF=BB=BF<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>MT1SundayReview</TITLE> <META http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"> <META content=3D"Jessica Kirkpatrick" name=3Dauthor> <META content=3D"MSHTML 6.00.5730.11" name=3DGENERATOR></HEAD> <BODY>Midterm 1 Review Problems<BR>Jessica Kirkpatrick<BR>Sunday, = October 1st,=20 2006<BR>please print page this and bring to review = session<BR><BR>Problem=20 1:<BR>A rocket starts from rest on the ground and accelerates vertically = upward=20 at a rate of 5.00 m/s=C2=B2 until it reaches a height of = 2.00=C2=B710=C2=B3 m. At that point=20 its engines shut off and the rocket goes into free-fall with an = acceleration of=20 -9.80 m/s=C2=B2.<BR>(a) What is the maximum height the rocket = reaches?<BR>(b) What is=20 the rocket's velocity just before it crashes into the Earth?<BR>(c) = Concept=20 question: a rocket engine expels burnt fuel out its bottom =E2=80=93 = explain how<BR>this=20 exerts a force on the rocket.<BR><BR>Problem 2:<BR>A cannon is arranged = to fire=20 projectiles, with initial speed v0, from the base of a hill of elevation = angle =CE=B1=20 (alpha). At what angle =CE=B8 (theta) from the horizontal should the = cannon be aimed=20 so as to obtain the maximum possible range R up the face of the hill?=20 <BR><BR>You may find useful the identities 1=3D cos2(theta) +sin2(theta) = ;=20 2sin(theta) cos(theta) =3D sin2(theta) ; cos2(theta) - sin2(theta) =3D=20 cos2(theta).<BR> <IMG style=3D"WIDTH: 209px; HEIGHT: 112px" = alt=3Dproblem1=20 src=3D"http://panic.berkeley.edu/~jessica/phys7a/problem1.png"><BR><BR>Pr= oblem=20 3:<BR>A 25 kg block slides on a 15 kg block which are attached by a = pulley on a=20 plane inclined at 35=C2=B0 as shown in the figure. All of the surfaces = are=20 frictionless.<BR>(a) Find the acceleration of each block.<BR>(b) Find = the=20 tension in the cable connecting the two blocks.<BR>(c) Now there is a=20
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coefficient of kinetic friction of mu1 =3D 0.05 between the 15kg block = and the=20 plane, and mu2 =3D 0.1 between the two blocks.  What are the new=20 accelerations of the blocks?<BR><BR><IMG style=3D"WIDTH: 268px; HEIGHT: = 124px"=20 alt=3Dproblem2=20 src=3D"http://panic.berkeley.edu/~jessica/phys7a/problem2.png"><BR>Proble= m 4:<BR>A=20 series of small metal spheres is tied along a string at specific, = carefully=20 chosen locations y0=3D0, y1, y2, y3, etc. The string is then held =
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This note was uploaded on 03/09/2010 for the course PHYSICS 7A taught by Professor Lanzara during the Fall '08 term at University of California, Berkeley.

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MT1 Review 2 - From: &lt;Saved by Windows Internet Explorer...

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