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Science
Physics
Question 4: a. Is momentum conserved in an inelastic collision? b. How about in an elastic collision? I
Question 4: a. Is momentum conserved in an inelastic collision? b. How about in an elastic collision? I
BUY
University Physics Volume 1
18th Edition
ISBN:
9781938168277
Author: William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:
OpenStax - Rice University
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1 Units And Measurement
2 Vectors
3 Motion Along A Straight Line
4 Motion In Two And Three Dimensions
5 Newton's Law Of Motion
6 Applications Of Newton's Laws
7 Work And Kinetic Energy
8 Potential Energy And Conservation Of Energy
9 Linear Momentum And Collisions
10 Fixed-axis Rotation
11 Angular Momentum
12 Static Equilibrium And Elasticity
13 Gravitation
14 Fluid Mechanics
15 Oscillations
16 Waves
17 Sound
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Chapter Questions
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Problem 9.1CYU: Check Your Understanding The U.S. Air Force uses “10gs” (an acceleration equal to 109.8m/s2 ) as the...
Problem 9.2CYU: Check Your Understanding What if we had assumed the phone did bounce on impact? Would this have...
Problem 9.3CYU: Check Your Understanding Suppose the second, smaller cart had been initially moving to the left....
Problem 9.4CYU: Check Your Understanding Would the ball’s change of momentum have been larger, smaller, or the same,...
Problem 9.5CYU: Check Your Understanding Even if there were some friction on the ice, it is still possible to use...
Problem 9.6CYU: Check Your Understanding The changes of momentum for Philae and for Comet 67/P were equal (in...
Problem 9.7CYU: Check Your Understanding There is a second solution to the system of equations solved in this...
Problem 9.8CYU: Check Your Understanding Suppose there had been no friction (the collision happened on ice); that...
Problem 9.9CYU: Check Your Understanding Suppose the initial velocities were not at right angles to each other. How...
Problem 9.10CYU: Check Your Understanding Notice that the mass of the air in the tank was neglected in the analysis...
Problem 9.11CYU: Check Your Understanding Suppose we included the sun in the system. Approximately where would the...
Problem 9.12CYU: Check Your Understanding Suppose you have a macroscopic salt crystal (that is, a crystal that is...
Problem 9.13CYU: Check Your Understanding How would the firework display change in deep space, far away from any...
Problem 9.14CYU: Check Your Understanding What is the physical difference ( or relationship) between dmdt and dmgdt...
Problem 1CQ: An object that has a small mass and an object that has a large mass have the same momentum. Which...
Problem 2CQ: An object that has a small mass and an object that has a large mass have the same kinetic energy....
Problem 3CQ: Is it possible for a small force to produce a larger impulse on a given object than a large force?...
Problem 4CQ: Why is a 10-m fall onto concrete far more dangerous than a 10-m fall onto water?
Problem 5CQ: What external force is responsible for changing the momentum of a car moving along a horizontal...
Problem 6CQ: A piece of putty and a tennis ball with the same mass are thrown against a wall with the same...
Problem 7CQ: Under what circumstances is momentum conserved?
Problem 8CQ: Can momentum be conserved for a system if there are external forces acting on the system? If so,...
Problem 9CQ: Explain in terms of momentum and Newton’s laws how a car’s air resistance is due in part to the fact...
Problem 10CQ: Can objects in a system have momentum while the momentum of the system is zero? Explain your answer.
Problem 11CQ: A sprinter accelerates out of the starting blocks. Can you consider him as a closed system? Explain.
Problem 12CQ: A rocket in deep space (zero gravity) accelerates by firing hot gas out of its thrusters. Does the...
Problem 13CQ: Two objects of equal mass are moving with equal and opposite velocities when they collide. Can all...
Problem 14CQ: Describe a system for which momentum is conserved but mechanical energy is not. Now the reverse:...
Problem 15CQ: Momentum for a system can be conserved in one direction while not being conserved in another. What...
Problem 16CQ: Suppose a fireworks shell explodes, breaking into three large pieces for which air resistance is...
Problem 17CQ: It is possible for the velocity of a rocket to be greater than the exhaust velocity of the gases it...
Problem 18P: An elephant and a hunter are having a confrontation. a. Calculate the momentum of the 2000.0-kg...
Problem 19P: A skater of mass 40 kg is carrying a box of mass 5 kg. The skater has a speed of 5 m/s with respect...
Problem 20P: A car of mass 2000 kg is moving with a constant velocity of 10 m/s due east. What is the momentum of...
Problem 21P: The mass of Earth is 5.971024kg and its orbital radius is an average of 1.501011m . Calculate the...
Problem 22P: If a rainstorm drops 1 cm of rain over an area of 10km2 in the period of 1 hour, what is the...
Problem 23P: What is the average momentum of an avalanche that moves a 40-cm-thick layer of snow over an area of...
Problem 24P: What is the average momentum of a 70.0-kg sprinter who runs the 100-m dash in 9.65 s?
Problem 25P: A 75.0-kg person is riding in a car moving at 20.0 m/s when the car runs into a bridge abutment (see...
Problem 26P: One hazard of space travel is debris left by previous missions. There are several thousand objects...
Problem 27P: A cruise ship with a mass of 1.00107kg strikes a pier at a speed of 0.750 m/s. It comes to rest...
Problem 28P: Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s butt...
Problem 29P: Water from a fire hose is directed horizontally against a wall at a rate of 50.0 kg/s and a speed of...
Problem 30P: A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after...
Problem 31P
Problem 32P: The x-component of a force on a 46-g golf ball by a 7-iron versus time is plotted in the following...
Problem 33P: A hockey puck of mass 150 g is sliding due east on a frictionless table with a speed of 10 m/s....
Problem 34P: A ball of mass 250 g is thrown with an initial velocity of 25 m/s at an angle of 30 with the...
Problem 35P
Problem 36P: Two identical pucks collide elastically on an air hockey table. Puck 1 was originally at rest; puck...
Problem 37P: The figure below shows a bullet of mass 200 g traveling horizontally towards the east with speed 400...
Problem 38P: A 20-kg child is coasting at 3.3 m/s over flat ground in a 4.0-kg wagon. The child drops a 1.0-kg...
Problem 39P: A 4.5 kg puffer fish expands to 40 of its mass by taking in water. When the puffer fish is...
Problem 40P: Explain why a cannon recoils when it fires a shell.
Problem 41P: Two figure skaters are coasting in the same direction, with the leading skater moving at 5.5 m/s and...
Problem 42P: A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain...
Problem 43P: A 5.50-kg bowling ball moving at 9.00 m/s collides with a 0.850-kg bowling pin, which is scattered...
Problem 44P: Ernest Rutherford (the first New Zealander to be awarded the Nobel Prize in Chemistry) demonstrated...
Problem 45P: A 90.0-kg ice hockey player hits a 0.150-kg puck, giving the puck a velocity of 45.0 m/s. If both...
Problem 46P: A 100-g firecracker is launched vertically into the air and explodes into two pieces at the peak of...
Problem 47P: In an elastic collision, a 400-kg bumper car collides directly from behind with a second, identical...
Problem 48P: Repeat the preceding problem if the mass of the leading bumper car is 30.0 greater than that of the...
Problem 49P: An alpha particle (4He) undergoes an elastic collision with a stationary uranium nucleus (235U) ....
Problem 50P: You are standing on a very slippery icy surface and throw a 1-kg football horizontally at a speed of...
Problem 51P: A 35-kg child rides a relatively massless sled down a hill and then coasts along the flat section at...
Problem 52P: A boy sleds down a hill and onto a frictionless ice- covered lake at 10.0 m/s. In the middle of the...
Problem 53P
Problem 54P: A billiard ball, labeled 1, moving horizontally strikes another billiard ball, labeled 2, at rest....
Problem 55P: A projectile of mass 2.0 kg is fired in the air at an angle of 40.0 to the horizon at a speed of...
Problem 56P: Two asteroids collide and stick together. The first asteroid has mass of 15103kg and is initially...
Problem 57P
Problem 58P: A proton traveling at 3.0106m/s scatters elastically from an initially stationary alpha particle and...
Problem 59P
Problem 60P: A family is skating. The father (75 kg) skates at 8.2 m/s and collides and sticks to the mother (50...
Problem 61P
Problem 62P: Two cars of the same mass approach an extremely icy four-way perpendicular intersection. Car A...
Problem 63P: Three point masses are placed at the corners of a triangle as shown in the figure below. Find the...
Problem 64P: Two particles of masses m1 and m2 separated by a horizontal distance D are released from the same...
Problem 65P: Two particles of masses m1 and m2 separated by a horizontal distance D are let go from the same...
Problem 66P: Two particles of masses m1 and m2 , move uniformly in different circles of radii R1 and R2 R2 about...
Problem 67P: Two particles of masses m1 and m2 move uniformly in different circles of radii R1 and R1 about the...
Problem 68P: Find the center of mass of a one-meter long rod, made of 50 cm of iron (density 8gcm3 ) and 50 cm of...
Problem 69P: Find the center of mass of a rod of length L whose mass density changes from one end to the other...
Problem 70P: Find the center of mass of a rectangular block of length a and width b that has a nonuniform density...
Problem 71P: Find the center of mass of a rectangular material of length a and width b made up of a material of...
Problem 72P: A cube of side a is cut out of another cube of side b as shown in the figure below. Find the...
Problem 73P: Find the center of mass of a cone of uniform density that has a radius R at the base, height h, and...
Problem 74P: Find the center of mass of a thin wire of mass in and length L bent in a semicircular shape. Let the...
Problem 75P: Find the center of mass of a uniform thin semicircular plate of radius R. Let the origin be at the...
Problem 76P: Find the center of mass of a sphere of mass M and radius R and a cylinder of mass in, radius r, and...
Problem 77P: (a) A 5.00-kg squid initially at rest ejects 0.250 kg of fluid with a velocity of 10.0 m/s. What is...
Problem 78P: A rocket takes off from Earth and reaches a speed of 100 m/s in 10.0 s. If the exhaust speed is 1500...
Problem 79P: Repeat the preceding problem but for a rocket that takes off from a space station, where there is no...
Problem 80P: How much fuel would be needed for a 1000-kg rocket (this is its mass with no fuel) to take off from...
Problem 81P: What exhaust speed is required to accelerate a rocket in deep space from 800 m/s to 1000 m/s in 5.0...
Problem 82P: Unreasonable Results Squids have been reported to jump from the ocean and travel 30.0 m (measured...
Problem 83AP: Two 70-kg canoers paddle in a single, 50-kg canoe. Their paddling moves the canoe at 1.2 m/s with...
Problem 84AP: Which has a larger magnitude of momentum: a 3000-kg elephant moving at 40 km/h or a 60-kg cheetah...
Problem 85AP: A driver applies the brakes and reduces the speed of her car by 20 , without changing the direction...
Problem 86AP: You friend claims that momentum is mass multiplied by velocity, so things with more mass have more...
Problem 87AP: Dropping a glass on a cement floor is more likely to break the glass than if it is dropped from the...
Problem 88AP: Your 1500-kg sports car accelerates from 0 to 30 m/s in 10 s. What average force is exerted on it...
Problem 89AP: A ball of mass m is dropped. What is the formula for the impulse exerted on the ball from the...
Problem 90AP: Repeat the preceding problem, but including a drag force due to air of fdrag=bv .
Problem 91AP: A 5.0-g egg falls from a 90-cm-high counter onto the floor and breaks. What impulse is exerted by...
Problem 92AP: A car crashes into a large tree that does not move. The car goes from 30 m/s to 0 in 1.3 m. (a) What...
Problem 93AP: Two hockey players approach each other head on, each traveling at the same speed Vi . They collide...
Problem 94AP: You are coasting on your 10-kg bicycle at 15 m/s and a 5.0-g bug splatters on your helmet. The bug...
Problem 95AP: A load of gravel is dumped straight down into a 30000-kg freight car coasting at 2.2 m/s on a...
Problem 96AP: Two carts on a straight track collide head on. The first cart was moving at 3.6 m/s in the positive...
Problem 97AP: A 100-kg astronaut finds himself separated from his spaceship by 10 m and moving away from the...
Problem 98AP: Derive the equations giving the final speeds for two objects that collide elastically, with the mass...
Problem 99AP: Repeat the preceding problem for the case when the initial speed of the second object is nonzero.
Problem 100AP: A child sleds down a hill and collides at 5.6 m/s into a stationary sled that is identical to his....
Problem 101AP: For the preceding problem, find the final speed of the case of each sled for the case of an elastic...
Problem 102AP: A 90-kg football player jumps vertically into the air to catch a 0.50-kg football that is thrown...
Problem 103AP: Three skydivers are plummeting earthward. They are initially holding onto each other, but then push...
Problem 104AP: Two billiard balls are at rest and touching each other on a pool table. The cue ball travels at 3.8...
Problem 105AP
Problem 106AP
Problem 107AP: Repeat the preceding problem if the balls collide when the center of ball 1 is at the origin and the...
Problem 108AP: Repeat the preceding problem if the balls collide when the center of ball 1 is at the origin and the...
Problem 109AP: Where is the center of mass of a semicircular wire of radius R that is centered on the origin,...
Problem 110AP: Where is the center of mass of a slice of pizza that was cut into eight equal slices? Assume the...
Problem 111AP: If 1 of the Earth’s mass were transferred to the Moon, how far would the center of mass of the...
Problem 112AP: You friend wonders how a rocket continues to climb into the sky once it is sufficiently high above...
Problem 113AP: To increase the acceleration of a rocket, should you throw rocks out of the front window of the...
Problem 114CP: A 65-kg person jumps from the first floor window of a burning building and lands almost vertically...
Problem 115CP: Two projectiles of mass m1 and m2 , are fired at the same speed but in opposite directions from two...
Problem 116CP: Two identical objects (such as billiard balls) have a one-dimensional collision in which one is...
Problem 117CP: A ramp of mass M is at rest on a horizontal surface. A small cart of mass m is placed at the top of...
Problem 118CP: Find the center of mass of the structure given in the figure below. Assume a uniform thickness of 20...
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