40 identical balls are rolling along a straight line. They all have speed equal to v, but some of them might move in opposite directions. When two of them collide they immediately switch their direction and keep the speed v. What is the maximal number of collisions that can happen?

Q: Students are given two spherical balls made of different materials, but of identical mass and…

A: Given, Students are given two spherical balls made of different materials, but of identical mass and…

Q: JD is playing with some clay (mass = 18-g). He flings it across the room, where it lodges on the…

A: mass of clay (m) = 18 g mass of toy car (m') = 250 g Initial velocity of clay = u Initial velocity…

Q: The 5.4-Mg bus B is traveling to the right at vB = 18 m/s. Meanwhile a 2-Mg car A is traveling at v₁…

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Q: A loaded gun is dropped on a frozen lake. The gun fires, with the bullet going horizontally in one…

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Q: A puck of mass m, -74.0 g and radius r-4.30 cm glides across an air table at a speed of 1.50 m/s as…

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Q: 10.20-g bullet is fired into a stationary block of wood having mass m = 4.940 kg. The bullet imbeds…

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Q: The 5.1-Mg bus B is traveling to the right at vp = 18 m/s. Meanwhile a 2-Mg car A is traveling at VA…

A: We will use the concept of conservation of linear momentum

Q: A hockey puck is hit by a stick and slides off at an initial speed of 0.5 m/s. Assuming that the ice…

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Q: In the arrangement of the figure, billiard ball 1 moving at a speed of 4.2 m/s undergoes a glancing…

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Q: A large adult with mass 65.1 kg and a small child with mass 34.2 kg are on ice skates on a smooth…

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Q: 2. A frictionless air puck of mass 300 g is travelling at 3.2 m/s in the direction 0°. It collides…

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Q: Two pucks are placed on an air table. The projectile puck of mass 0.15 kg is launched towards the…

A: mass of projectile puck = m1 = 0.15 kgmass of target puck = m2 = 0.1 kginitial speed of projectile…

Q: A solid copper sphere moving to the right with a speed 6.0 m/s collides head-on with a solid brass…

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Q: A ball is rolling at 10.0 m/sec when it collides with a stationary ball that is half its mass. The…

A: Given data: Initial velocity of first ball (u1) = 10.0 m/sec Initial velocity of second ball (u2) =…

Q: 7. A billiard ball is shot west at 2.30 m/s. A second, identical billiard ball is shot east at 1.30…

A: According to question--- given data--  Initial velocity of ball 1 = 2.30 m/s. initial velocity of…

Q: A group of particles of total mass 42 kg has a total kinetic energy of 363 J. The kinetic energy…

A: Thus the total kinetic energy (Ttotal) of a group of particles is equal to the sum of the kinetic…

Q: A 4.20-gram bullet moves at 120 m/s in a horizontal direction which was buried in a 75-gram block…

A: Given Mass of bullet = 4.2 g Initial velocity of bullet = 120 m/s Initial velocity of block = 0 m/s…

Q: A marble with mass mA = 2.5 g moves eastward with speed VA = 1.75mm I then collides with another…

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Q: A 20 g ball of clay traveling east at 4.0 m/s collides with a 40 g ball of clay traveling north at…

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Q: el at rest explodes, breaking into three pieces. Two pieces, having equal mass, fly off…

A: Suppose a vessel at rest explodes breaking into three pieces. Two pieces, having equal mass (m) fly…

Q: Two 490 g blocks of wood are 2.0 m apart on a frictionless table. A 12 g bullet is fired at 390 m/s…

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Q: Two friends are playing pool at arcade center. One guy hit the cue ball to strike at another ball…

A: Consider the following diagram,

Q: A 3000kg truck runs into the rear of a 1000kg car that was stationary. The truck and car are locked…

A: The expression for the required speed from conservation of momentum is,

Q: A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing…

A: Given, mass of the passenger is, m=78kg the initial velocity of the passenger (with the car) is,…

Q: Part A If the collision is perfectly elastic, what is the speed of the 120 g ball after the…

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Q: Three children are standing together on a totally frictionless frozen pond. However, their combined…

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Q: Two identical billiard balls collide head-on with each other. The first ball hits the second ball…

A: Given, Two identical billiard balls collide head on with each other. So mass is same. Initial speed…

Q: Two friends are playing pool at arcade center. One guy hit the cue ball to strike at another ball…

A: Answer:-  Given Velocity of cue ball after collision Vf= 2.50 m/s  angle (A1) = 14.00     ( theta =…

Q: A 12kg cart rolling at 18m/s to the right collides with a 15kg cart that is at rest. After they…

A: Given Data:- Mass of the two carts are m1=12 kg, m2=18 kg Initial velocity of 12 kg cart is v1i=18…

Q: a. What is the speed of the combined mass system after the collision?

A: Conservation of linear momentum If no net external force acts on a particle, then the momentum of…

Q: Two 490 g blocks of wood are 2.0 m apart on a frictionless table. A 9.0 g bullet is fired at 430 m/s…

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Q: The figure shows a glancing (not head-on) collision between two billiard balls (viewed from above).…

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Q: Two objects with equal masses and speeds as shown collide and stick together. What is the final…

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Q: An object of mass 3.50 kg moving with a velocity of 2.60 m/s collides with another object of mass…

A: Given Data: The mass of the first object is, m1=3.50 kg The mass of the second object is, m2=2.20 kg…

Q: A 20 g ball of clay traveling east at 2.0 m/s collides with a 30 g ball of clay traveling 30° south…

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Q: A bicyclist going 2.5 m/s is stopped in a collision by an impulse of 250 N.s. The collision takes…

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Q: A basketball of mass 1.25 kg traveling with an initial speed of 8 m/sec bounces off of a backboard…

A: Given : Mass of basketball m = 1.25 kg             Initial speed u = 8 m/s             Final speed v…

Q: An 80 kg mass moving at 10 m/s collides with a stationary 48 kg mass. After the collision, both…

A: Given : Masses , M = 80 Kg with initial velocity, u1 = 10 m/s   m = 48 Kg at rest i.e u2 = 0 m/s…

Q: Car A is moving to the right at 0.5m/s. Meanwhile, Car B, which is 6 meters to the right of car A…

A: Velocity of car A = 0.5 ms towards right Velocity of car B = 0.25 ms  towards left Distance between…

Q: A 0.8 kg block is moving horizontally to the right with a speed of 6 m/s when it strikes a vertical…

A: Given, Mass of block (m) = 0.8kg   { Take right side as positive direction and left side as…

Q: A railroad car of mass 2.85 x 10^4 kg moving at 2.60 m/s collides and couples and with two coupled…

A: mass of railroad car, m1 = 2.85 x 104 kg Mass of two coupled railroad cars, m2 = 2m1 Initial speed…

Q: A hockey puck is sliding on a frictionless ice, in an eastward direction. It collides with a second…

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Q: A 10.50-g bullet is fired into a stationary block of wood having mass m = 4.980 kg. The bullet…

A: We are going to apply conservation of momentum to solve the problem. Final answer is 289.4 in four…

Q: Two remote control cars with masses of 1.15 kilograms and 1.98 kilograms travel toward each other at…

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