Ch3_2

From: Subject: Ch3_2 Date: Sat, 6 Sep 2008 18:01:14 -0400 MIME-Version: 1.0 Content-Type: multipart/related; type="text/html"; boundary="----=_NextPart_000_0000_01C9104A.8DA624F0" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C9104A.8DA624F0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Content-Location: file://D:\20591.html Ch3_2

Ch3_2

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 = .

NOTE! For all=20 problems neglect air resistance unless explicitly asked to consider = it. =20

1) A football is kicked from level ground and lands after s at a distance of yards from the kicker. What is the horizontal component of the = velocity=20 with which the ball leaves the kicker's foot (sheet=20 17,19, drawing in 21 = helps) ?

2) A football is kicked from level ground and lands after s back on the ground. What is the risetime of the ball (the time = when=20 the maximum height is reached) (see sheet 23,=20 Ch2) ? =20

3) A football is kicked from level ground and lands after s back on the ground. What is the vertical component of the = velocity=20 with which the ball leaves the kicker's foot (sheet=20 17,19,21) ?=20

4) A projectile is launched horizontally from a height of m and hits the ground at the horizontal distance of m from the launch point. What is the launch velocity (sheet 17,19, 25') ?=20

5) A marble is dropped at the same time when a bullet is fired = horizontally=20 (both from the same height). The marble hits the ground after s. When does the bullet hit the ground (recall: no air resistance, see=20 sheet 25,25') ?=20

6) The projectile from a be-be-gun which is pointed vertically up = reaches a=20 maximum height h₁(see sketch = Ch2 sheet=20 21). The maximum height when the same gun is tilted (sheet 21)at an angle of degrees with respect to the horizontal is h₂. What is the = ratio=20 h₂/h₁ (sheet = 17,19)=20 ?=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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