mt2w - Physics 14- Midterm #2- Fall 200Sw SHOW ALL YOUR...

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Unformatted text preview: Physics 14- Midterm #2- Fall 200Sw SHOW ALL YOUR WORK AND REASONING 1. (2 pts) Below, on the same graph, draw and label two waves: Wave 1: large amplitude and short wavelength. Wave 2: small amplitude and long wavelength. \ 2. (2 pts) What has mo~emomentum, a large slow moving ocean liner (a ship), or a thrown baseball? Explain. O~ ~-.i\~ ~~~ ~~ ~ ~ ~W- ~ ~ d- a. bo-.K baJA )-ww. 0-. Sim s'~ t,.J OtA-l c1 t\AJLiM.. "t\-:J ~ w . (f CJW ~ , ~~:. (",,-uS) ~ ( ~lN~) 3. (3 pts) You jump from a chair and land on the ground, bending your knees as you stop. In terms of impulse and momentum, why does it hurt more if you DON'T bend your knees?- ~~ ~ ~ ~(J 1-0 ~ ~ +(.v.A ,\-- ~-6,\;A ~ "" S+vr. ~ VV\UJ.MJ) ~) ~-U ~1~ ~ ~Y\?V~clR +ko ~~ \~(>""\..L- \V\.v\"~ ~/r H1~ +0 ~J.MUL ~.-O\/vC ~ .-10 ~ \ "'" C'~ "=- (f~I'-Cf) (T IIV1 E J ~ (Iu ~ tn~-- Physics 14- Midterm #2- Fall 2008w 4. (2 pts) A mass of 2 kilograms is moving at 4 mIs, and a 6 kilogram mass is moving at 2m/s. ~as greater kinetic energy? ~ ~ "-" i~\t '1- ~ i (1-)(td = JhT ~*~ 1- _ K' b ~ '. k = i VV'\ \f ~ ~ i (~ ) (1) =- 1 L .J 1 5. (4 pts) What is the value of the period, amplitude and frequency of the wave below? Show the period and amplitude on the graph. 20 10-20 If the wavelength is 60 em, what is the speed of the wave in the graph above? ::::) V ~ '-I- C~ /5--- Which has greatermomentum? 1 '- l' V'\'\ V :: '2( 4)- f vY\ V =- 6(2) = Physics 14 Midterm #2- Fall 2008w 3 6. A bear (mass = 400 kg) is running toward a wolf (mass = 100 kg). The bear is moving at 20 m/s when it grabs the wolf which is running at 10 m/s straight toward the bear. The bear keeps hold of the wolf after the collision. a) (3 pts) Draw a diagram showing bear and wolf just before and just after the collision, showing their velocities accurately....
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This note was uploaded on 02/10/2011 for the course PHYS 14 taught by Professor Physcs14 during the Spring '09 term at Santa Monica.

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mt2w - Physics 14- Midterm #2- Fall 200Sw SHOW ALL YOUR...

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