 3.1: Which has a greater momentum: an automobile at rest ora moving skat...
 3.2: When a ball is hit with a given force, why does contactover a long ...
 3.3: Why is it a good idea to extend your bare hand forwardwhen you are ...
 3.4: Why would it be a bad idea to have the back of your handup against ...
 3.5: In karate, why is a force that is applied for a short timemore effe...
 3.6: In boxing, why is it advantageous to roll with the punch?
 3.7: If a ball has the same speed just before being caughtand just after...
 3.8: In the preceding question, in which of the cases a, b, or cis the g...
 3.9: What does it mean to say that momentum (or any quantity)is conserved?
 3.10: Is momentum conserved during an elastic collision? Duringan inelast...
 3.11: Railroad car A rolls at a certain speed and makes a perfectlyelasti...
 3.12: If the equally massive railroad cars of the preceding questioncoupl...
 3.13: When is energy most evident?
 3.14: Cite an example in which a force is exerted on an objectwithout doi...
 3.15: Which, if either, requires more work: lifting a 50kg sacka vertica...
 3.16: A car is raised a certain distance on a servicestation liftand the...
 3.17: Two cars are raised to the same elevation on servicestationlifts. I...
 3.18: If a moving car speeds up until it is going twice as fast,how much ...
 3.19: Compared with some original speed, how much work mustthe brakes of ...
 3.20: If you push a crate horizontally with a force of 100 Nacross a 10m...
 3.21: What will be the kinetic energy of the ram of a piledriver when it ...
 3.22: An apple hanging from a limb has potential energybecause of its hei...
 3.23: What is the relationship between work and power?
 3.24: Can a machine multiply the input force? Input distance?Input energy...
 3.25: If a machine multiplies force by a factor of 4, what otherquantity ...
 3.26: What is the efficiency of a machine that miraculouslyconverts all t...
 3.27: What becomes of energy when efficiency is lowered in amachine?
 3.28: What is the ultimate source of energies for fossil fuels,dams, and ...
 3.29: What is the ultimate source of geothermal energy?
 3.30: Can we correctly say that hydrogen is a relatively newsource of ene...
 3.31: If your instructor has an air table or air track, play aroundwith c...
 3.32: When you get a bit ahead in your studies, cut classessome afternoon...
 3.33: Pour some dry sand into a tin can that has a cover.Compare the temp...
 3.34: Place a small rubber ball on top of a basketball or soccerball and ...
 3.35: Momentum mv Show that the momentum is 16 kg # m/s for a 2kg brickp...
 3.36: Calculate the momentum of a 10kg bowling ball rollingat 2 m/s.
 3.37: Impulse Ft Show that the impulse on a baseball that is hit with100 ...
 3.38: Calculate the impulse of a cart when an average force of10 N is exe...
 3.39: Show that an average force of 25 N exerted on a cart for2 s changes...
 3.40: Rearrange the equation Ft = (mv) to solve for the force F.Show that...
 3.41: Show that 70 J of work is done when a 20N force movesa cart 3.5 m ...
 3.42: Calculate the work done in lifting a 100N block of ice avertical d...
 3.43: Show that the gravitational potential energy of a 10kg boulderrais...
 3.44: Calculate the number of joules of potential energyrequired to eleva...
 3.45: Show that the kinetic energy of an 84kg scooter movingat 2 m/s is ...
 3.46: Show that the scooter in the preceding problem will havefour times ...
 3.47: A sustained force of 50 N moves a model airplane 20 malong its runw...
 3.48: Show that 90 J of work is needed to increase the speed ofa 20kg ca...
 3.49: Show that the power required to give a brick 100 J ofpotential ener...
 3.50: In Chapter 1 we learned the definition of acceleration,a = v/t, and...
 3.51: A 10kg bag of groceries is tossed onto a table at 3 m/s andslides ...
 3.52: An ostrich egg of mass m is tossed at a speed v into a saggingbed s...
 3.53: A 6kg ball rolling at 3 m/s bumps into a pillow andstops in 0.5 s....
 3.54: At a baseball game a ball of mass m = 0.15 kg moving ata speed v = ...
 3.55: Judy (mass 40 kg), standing on slippery ice, catches herdog Atti (m...
 3.56: A railroad diesel engine weighs four times as much asa freight car....
 3.57: A 5kg fish swimming at 1 m/s swallows an absentminded1kg fish swi...
 3.58: BellyFlop Bernie dives from atop a tall flagpole into aswimming po...
 3.59: A simple lever is used to lift a heavy load. When a 60Nforce pushe...
 3.60: In the preceding problem:(a) How much work is done by the 60N forc...
 3.61: In raising a 6000N piano with a pulley system, themovers note that...
 3.62: The girl steadily pulls her endof the rope upward a distance of0.4 ...
 3.63: How many watts of power do you expend when you exerta force of 1 N ...
 3.64: Show that 480 W of power is expended by a weightlifterwhen lifting ...
 3.65: When an average force F is exerted over a certain distanceon a shop...
 3.66: Emily holds a banana of mass m over the edge of a bridgeof height h...
 3.67: Starting from rest, Megan zooms down a frictionlessslide from an in...
 3.68: The balls have different masses and speeds. Rank the followingfrom ...
 3.69: Jogging Jake runs along a train flatcar that moves at thevelocities...
 3.70: Sam pushes crates starting from rest across the floor ofhis classro...
 3.71: A ball is released from rest at the left of the metal trackshown. A...
 3.72: The roller coaster ride starts from rest at point A. Rankthese quan...
 3.73: Rank the scale readings from greatest to least. (Ignorefriction.)
 3.74: A lunar vehicle is tested on Earth at a speed of 12 km/h.When it tr...
 3.75: In terms of impulse and momentum, why do airbags incars reduce the ...
 3.76: In grandpas time automobiles were previously manufacturedto be as r...
 3.77: If you throw a raw egg against a wall, it will break; but,if you th...
 3.78: In terms of impulse and momentum, when a boxer isbeing hit, why is ...
 3.79: A pair of skaters initially at rest push against each otherso that ...
 3.80: Bronco dives from a hovering helicopter and finds hismomentum incre...
 3.81: When you are traveling in your car at highway speed,the momentum of...
 3.82: If you throw a ball horizontally while standing ona skateboard, you...
 3.83: You are at the front of a floating canoe near a dock.You leap, expe...
 3.84: A fully dressed person is at rest in the middle of a pondon perfect...
 3.85: The examples in the three preceding exercises can beexplained in te...
 3.86: In Chapter 2 rocket propulsion was explained in terms ofNewtons thi...
 3.87: To throw a ball, do you exert an impulse on it? Do youexert an impu...
 3.88: When vertically falling sand lands in a horizontally movingcart, th...
 3.89: Freddy Frog drops vertically from a tree onto a horizontallymoving ...
 3.90: In a movie, the hero jumps straight down from a bridgeonto a small ...
 3.91: If your friend pushes a stroller four times as far as you dowhile e...
 3.92: Which requires more work: stretching a strong spring acertain dista...
 3.93: Two people who weigh the same climb a flight of stairs.The first pe...
 3.94: When a cannon with a longer barrel is fired, the force ofexpanding ...
 3.95: At what point in its motion is the KE of a pendulum bobat a maximum...
 3.96: A baseball and a golf ball have the same momentum.Which has the gre...
 3.97: A physics instructor demonstrates energy conservationby releasing a...
 3.98: On a playground slide, a child has potential energy thatdecreases b...
 3.99: Consider the identical balls released from rest on tracksA and B, a...
 3.100: If a golf ball and a PingPong ball move with the sameKE, can you s...
 3.101: In the absence of air resistance, a snowball thrown verticallyupwar...
 3.102: Youre on a rooftop and you throw one ball downward tothe ground bel...
 3.103: When a driver applies the brakes to keep a car going downhillat a c...
 3.104: When the mass of a moving object is doubled withno change in speed,...
 3.105: When the velocity of an object is doubled, by whatfactor is its mom...
 3.106: When the velocity of an object is doubled, by whatfactor is its mom...
 3.107: If an objects kinetic energy is zero, what is its momentum?
 3.108: If your momentum is zero, is your kinetic energy necessarilyzero also?
 3.109: Two lumps of clay with equal and opposite momentahave a headon col...
 3.110: Consider the swingingballs apparatus. If two balls arelifted and r...
 3.111: Railroad cars are loosely coupled so that there is anoticeable time...
 3.112: Your friend says that the law of momentum conservationis violated w...
 3.113: An ice sailcraft is stalled on a frozen lake on a windlessday. The ...
 3.114: Will your answer to the preceding question be differentif the air i...
 3.115: Discuss the advisability of simply removing the sail inthe precedin...
 3.116: Suppose that three astronauts outside a spaceship decideto play cat...
 3.117: Can something have energy without having momentum?Explain. Can some...
 3.118: Imagine youre in a completely dark room with no windowsand you cut ...
 3.119: Discuss the physics that explains how the girl in Figure3.29 can ja...
 3.120: Why bother using a machine if it cannot multiply workinput to achie...
 3.121: In the pulley system shown, block A has a mass of 10 kgand is suspe...
 3.122: Does a car burn more fuel when its lights are turned on?Does the ov...
 3.123: This may seem like an easy question for a physics typeto answer: Wi...
 3.124: To combat wasteful habits, we often speak of conservingenergy, by w...
 3.125: Your friend says that one way to improve air quality in acity is to...
 3.126: If an automobile had a 100%efficient engine, transferringall of th...
 3.127: The energy we require to live comes from the chemicallystored poten...
 3.128: A red ball of mass m and a blue ball of mass 2m havethe same kineti...
 3.129: No work is done by gravity on a bowling ball resting ormoving on a ...
 3.130: Consider, a bob attached by a string, a simple pendulum,that swings...
Solutions for Chapter 3: Momentum and Energy
Full solutions for Conceptual Physical Science  5th Edition
ISBN: 9780321753342
Solutions for Chapter 3: Momentum and Energy
Get Full SolutionsThis textbook survival guide was created for the textbook: Conceptual Physical Science, edition: 5. This expansive textbook survival guide covers the following chapters and their solutions. Since 130 problems in chapter 3: Momentum and Energy have been answered, more than 25086 students have viewed full stepbystep solutions from this chapter. Conceptual Physical Science was written by and is associated to the ISBN: 9780321753342. Chapter 3: Momentum and Energy includes 130 full stepbystep solutions.

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parallel

any symbol
average (indicated by a bar over a symbol—e.g., v¯ is average velocity)

°C
Celsius degree

°F
Fahrenheit degree