Ch2_1

From: Subject: Ch2_1 Date: Sat, 6 Sep 2008 17:57:15 -0400 MIME-Version: 1.0 Content-Type: multipart/related; type="text/html"; boundary="----=_NextPart_000_0000_01C91049.FF5A3A10" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C91049.FF5A3A10 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Content-Location: file://D:\4805.html Ch2_1

Ch2_1

New Problems reloads the page with new = variable=20 values in all questions. You must do this after grading the test = to rework=20 it another time.
Make sure to calculate your answers = in SI=20 units unless specified otherwise .

1) An object travels from a position x=3D cm to x=3D cm with an average velocity of m/s. How many seconds does the trip last (see sheet 3 , 3')?

2)The position vs time graph of an object moving with constant speed is=20 described by x =3D t with position x and time t in SI units. Give the = value=20 of the constant velocity in SI units. Indicate with a negative = (positive) sign=20 of your result whether the average velocity in this case is equal (is = not equal)=20 to the instantaneous velocity (see sheets=20 5).=20

3) The position x of an object as a function of time is given as = x=20 =3D 3 + t + t². All quantities are understood to be quoted in SI = units.=20 Calculate the position of the object at s (see sheet 7). =20

4) The position x of an object as a function of time is given as = x=20 =3D 3 + t + t². All quantities are understood to be quoted in SI = units.=20 Calculate the instantaneous velocity of the object at s (see sheets 5,click 5'',6,9, see = sheet 7 in the=20 calculus chapter).=20

5) An object moves for s with an average acceleration of m/s². What is the change in velocity (see sheet 11) ?=20

6) An object moves with constant acceleration of m/s² for s and reaches a final velocity of m/s. What was its initial velocity (see = sheet=20 13) ?=20

Once you have=20 submitted your answers for grading by clicking the grade button, you = cannot=20 resubmit answers for the same Problem Set--you must use the 'New = Problems'=20 button first.=20

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