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Name: ____________________________Date:_____________________Hour:______Physics Semester 2 Final ReviewTopics Covered:Forces and Newton’s LawsMomentumEnergy Mechanical WavesAnalyzing multiple representations of data Definitions:InertiaEnergyWorkForceMechanical WaveWavelengthFrequencyPeriodAmplitudeCrestTroughCompressionRarefactionMediumMomentumNormal ForceFrictionKinetic EnergyKinetic FrictionPotential EnergyStatic FrictionGravityWeight MassConservationForces:What is mass? What is weight? How are weight and mass related? Give an example of where your weight will be different but your mass will be the same.What are Newton’s Third Law force pairs? Draw force diagrams representing you sitting in a chair and circle the N3LFPs.What is the normal force? What is tension? What does Newton’s First Law say? According to Newton’s First Law, why is wearing your seat belt so important? What does Newton’s Second Law say? What is the equation used to represent this law? According to Newton’s second law, would you rather be stuck at a stoplight behind a semi truck or behind a small car and why?What is Newton’s Third Law? Give an example of Newton’s Third Law in everyday life. Pictures are not needed, but can be helpful. Write an equation that could be used to represent Newton’s Third Law.Consider the cart on a track below. A towing force is applied acting to the right. Assume that friction can be ignored. 13049252006602 kg002 kg18859501149361 N001 NWhat would happen to the acceleration if:the mass of the cart doubled?the towing force was doubled?both the mass of the cart and the towing force were doubled?5105400406401 N001 N433387527940004686300825492 kg002 kgthe towing force was applied at an angle as shown at the right? the track is inclined up?the track is inclined down?the length of the string is tripled?the towing force is applied to two 1 kg carts hooked together??Paul Davis shoots a basketball to try to make a 3-point shot. Draw a force diagram for the ball right after he lets go. A neglectful student forgets to “turtle” one of our expensive green carts and leaves it on the track. A moment later, a student makes the mistake of lining up at the door before the bell rings and bumps the table. The cart starts to roll at a constant velocity. Draw a force diagram for the rolling cart after the table was bumped.Eventually the cart rolls off the track and table. Draw a force diagram for the cart after it leaves the table.How would this entire situation change if there was a small amount of friction involved between the track and the cart?Ms. Speicher gets so fed up with her 6th hour that she decides to jump out of a plane to get away from them. Draw a force diagram at the following moments:After she jumpsShe reaches terminal velocity After she pulls her chuteTwo students are performing a physics experiment on frictionless ice. One student (A) has a mass of 85 kg and the other student (B) has a mass of 75 kg. Describe the forces when:A pushes B (while they are still touching)B pushes A (while they are still touching)Both push each other as hard as they can (while they are still touching)Momentum:Using what we know about momentum and its conservation, explain why seat belts may be more important in cars than in buses. A ball is thrown upward. Analyze the momentum of the ball at each of the points indicated on the diagram.Kim holds a 2.0 kg air rifle loosely and fires a bullet of mass 1.0 g. The muzzle velocity of the bullet is 150 m/s. What is the recoil speed of the rifle?If the girl in the previous question holds the rifle tightly against her body, the recoil speed is less. Explain. Calculate the new recoil speed assuming the girl has a mass of 48 kg.An MSU linebacker with a mass of 115.0 kg moving west at 2 m/s tackles a UM fullback with a mass of 91.0 kg moving east at 6 m/s. Just after they collide, they are momentarily stuck together, and both are moving at a speed of 1.53 m/s. what is the momentum of the MSU linebacker? what is the momentum of the UM fullback? what is the final momentum of the two players after the collision? A Greyhound bus and a Ford Focus have a head-on collision.Which vehicle experiences the greatest force and why? Which vehicle experiences the greatest impulse and why? Which vehicle experiences the greatest momentum change and why? Which vehicle experiences the greatest acceleration and why? A 9 kg ball is projected upward off a table with a velocity of 4 m/s. If the table has a mass of 80 kg, what is the recoil velocity of the table? What is the relationship between the following variables: F, t, p, m, and v? Explain these relationships both in words and mathematically.Energy:Name 5 specific types of energy and classify them as either potential or kinetic.A ball is thrown upward. Analyze the energy of the ball at each of the points indicated on the diagram.Determine the kinetic energy of a 550-kg roller coaster car that is moving with a speed of 15.2 m/s.A tourist manages to drop a 4 kg camera from the top of the London Eye, a 135 m Ferris wheel. Ignoring friction and any energy conversions which reduce the camera's mechanical energy, complete the table: (*Use g = 10 m/s2)Height (m)Velocity (m/s)Eg (J)Ek (J)135 m0 m/s20 m/s 1350 J2025 J5 mCalculate the gravitational potential energy of a 13 kg garden gnome on Ms. Speicher’s balcony, 25m above ground. Ms. Speicher’s dog, Reese has a mass of 5.5 kg. Calculate her kinetic energy if she is running with a velocity of 2.5 m/s. How much work is done if Mr. Warneck lifts a 8 N rocket from the ground to a height of 3 m? Using the formula for work, derive a formula for change in potential energy of an object lifted a distance h. How much gravitational potential energy does the rocket gain? Austin has a mass of 85 kg and has 750 J of kinetic energy. What is his velocity? How high above the ground would Julie need to lift a 3.5 kg cinch bag in order for it to have 70 J of gravitational potential energy? How much work is done by an applied force to lift a 10-Newton block 2 meters vertically at constant speed?Mechanical Waves:13271522415500The illustration shows a series of transverse/longitudinal waves. Label each part.Look at the picture below of two pulses on a string. If the amplitude of each pulse is 5 cm, what will the height of the wave be when the two pulses meet in the middle of the string?5715001397000Define medium and give examples of possible mediums. Describe its importance for mechanical waves.What do waves transfer?Suppose that a water wave coming into a dock has a velocity of 1.5m/s and a wavelength of 2m.? With what frequency does the wave hit the dock? Express in words and mathematically the relationship betweena. period and frequencyb. wavelength and frequencyc. wavelength and periodWhat is the difference between longitudinal/transverse waves and compression waves? Give an example of each type.Draw the reflection of the following pulses:24155401200151487170177800098044011557000 1609090283845002486025654059315456413500 16281405842000 Two pulses are moving toward each other on a string. Draw what the combined pulse will look like when they meet in the middle. ................
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