A 30,000kg mass boxcar sits at rest on a horizontal railroad track. A second car, which has a mass of 90,000kg, moves toward the first at an unknown speed, collides and sticks to the first. The coupled pair then roll toward a spring bumper at the end of the track. The two cars compress the spring 0.96m before coming to rest. If the spring is calibrated to compress 1cm when a 2500N force is applied to it, what was the second car’s initial speed?

Q: In the figure, block 2 (mass 1.20 kg) is at rest on a frictionless surface and touching the end of…

A: Given Data:Mass of object 1 (m1) = 1.80 kg.Mass of object 2 (m2) = 1.20 kg.Speed of object 1 (v1) =…

Q: na ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a…

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Q: A 14.0-g bullet is fired into a block of wood with speed, = 270 m/s (see the figure below). The…

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Q: Old naval ships fired 11 kg cannon balls from a 240 kg cannon. It was very important to stop the…

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Q: In the figure, block 2 (mass 1.20 kg) is at rest on a frictionless surface and touching the end of…

A: The mass of block-1 is given as, m1=1.20 kg, The speed of block-1 is given as, v1=4.50 m/s, The mass…

Q: A 12.0-g bullet is fired horizontally into a 112-g wooden block that is initially at rest on a…

A: Given data *The mass of the bullet is m = 12.0 g = 0.012 kg *The mass of the wooden block is M = 112…

Q: Two masses m1=20.4kg and m2=27.8kg are free to move along the x-axis without friction. Mass m2 has a…

A: To determine: The velocities of m1 and m2 after the collision.

Q: In the figure, block 1 (mass 3.5 kg) is moving rightward at 8.0 m/s and block 2 (mass 4.4 kg) is…

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Q: pong is on a sled with a mass 3500 kg moving at 32 m/s. Polly is on a sled with a mass of 4100 kg…

A: Total mass on sled 1 m1=3500 kg which is moving with a velocity v1=32 m/s and total mass on sled 2…

Q: In the figure below, block 2 (mass 1.4 kg) is at rest on a frictionless surface and touching the end…

A: The energy stored in the spring is  U =0.5 K d2 where, d is the compression, K is the spring…

Q: An object with mass m1 = 1kg moving to the right at a speed of 4m / s collides with a spring…

A: m1 = 1 kg ,m2 = 2 kg , v1 = 4 m/s , v2 = - 2 m/s , v1f = 3 m/s Force constant , k = 105 N /m To find…

Q: The mass of particle 1 is 11kg. The initial velocity for particle 1 is  (-104m/s)i + (216m/s)j. F21…

A: Given informationF21=Fxe-tTi+Fysin(2πtT)j                  (1)where Fx=16.8 NFy=-106 NT=100sprocess…

Q: As seen below, a ballistic pendulum can be used to determine incoming projectile speeds by measuring…

A: Given, weight of the particle, W = 2(oz)=216lb weight of the box, W =50lb the initial velocity of…

Q: Bob is on a sled of mass 3500 kg moving at 32 m/s. Pong is on a sled of mass 4100 kg moving at 10…

A: Given: The mass of the bob with a sled is 3500 kg. The initial velocity of the bob with a sled is 32…

Q: In the figure, block 2 (mass 1.60 kg) is at rest on a frictionless surface and touching the end of…

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Q: A 1.68 kg mass is initially at rest upon a frictionless, horizontal surface.  An applied force of…

A: The mass of the object is 1.68 kg.The initial speed of the object is 0 m/s.The surface is…

Q: In the figure, block 2 (mass 1.10 kg) is at rest on a frictionless surface and touching the end of…

A: Given data:  Mass of block 2 (m2) = 1.10 kg Initial velocity of block 2 (V2) = 0 m/s Mass of block 1…

Q: In the figure, block 2 (mass 1.40 kg) is at rest on a frictionless surface and touching the end of…

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Q: In the figure, block 1 (mass 2.1 kg) is moving rightward at 14 m/s and block 2 (mass 6.7 kg) is…

A: Write the given data.

Q: In the figure, block 2 (mass 1.80 kg) is at rest on a frictionless surface and touching the end of…

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Q: A spring that has negligible mass and a spring constant of k = 900 N/m, is attached to a table, so…

A: We are given the initial compression in the spring. We are also given the spring constant. When the…

Q: 15) A 1.0 kg ball is tied to the end of a 2.5 m string to form a pendulum. The pendulum is released…

A: Given information: The mass of the ball, m=1.0 kg The length of the string, L=2.5 m The mass of the…

Q: Two blocks are on a frictionless horizontal table. A block of mass m,=1.51kg travelling with a speed…

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Q: In the figure, block 1 (mass 1.3 kg) is moving rightward at 9.1 m/s and block 2 (mass 4.5 kg) is…

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Q: In the figure, block 2 (mass 1.20 kg) is at rest on a frictionless surface and touching the end of…

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Q: An object with mass m1 = 2m which moves on horizontal surface with constant speed v, collides with…

A: first mass = 2m second mass =  3m initial speed of first mass = v using conservation of momentum 2mv…

Q: A mass M1 (of 2.5 kg) slides without friction on a table at a speed of 5 m/sec towards a mass M2 of…

A: M1 = 2.5 kg v = 5 m/s M2 = 5 kg k = 100 N/m

Q: On a flat, frictionless table, two blocks (B1 of mass 2.00 kg and B2 of mass 3.00 kg) are pressed…

A: The mass of the block B1, The mass of block B2, The elastic potential energy of the spring,

Q: In a car crash, a Volvo of mass 1.85 x 104 kg collides with a stationary truck of mass 2.20 x 104 kg…

A: 1. Source at rest - When the sound source (whistle) is stationary relative to the observer, the…

Q: A 5.00-g bullet moving with an initial speed of v₁ = 390 m/s is fired into and passes through a…

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Q: A 12.0-g bullet is fired horizontally into a 114-g wooden block that is initially at rest on a…

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Q: A small ball of mass mb = 0.050 kg is projected into a pendulum of mass Mp = 0.200 kg in a ballistic…

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Q: (a) Determine the speed of each object when the two pass each other. m/s (b) Determine the speed of…

A: Given, m1 = 4.70 kg  m2 = 3.05 kg h = 4 m  When the two blocks cross each other, height of 4.70 kg…

Q: In the figure, block 2 (mass 1.20 kg) is at rest on a frictionless surface and touching the end of…

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Q: A 40-ton rail car and an 80-ton rail car, initially at rest, are connected together with a giant but…

A: Given   mass of one car = 40-ton Mass of another car = 80-ton initially at rest, are connected…

Q: A bullet of mass m=5g moving with an initial speed 400m/s of 400 m/s is fired into and passes…

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Q: n the figure, block 2 (mass 1.40 kg) is at rest on a frictionless surface and touching the end of an…

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Q: In the figure, block 1 (mass 3.2 kg) is moving rightward at 13 m/s and block 2 (mass 5.5 kg) is…

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Q: Q12: In a collinear collision, a particle with an initial speed V,strikes a stationary particle of…

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Q: A truck equipped with a massless spring in front crashes with a stationary truck. The mass of the…

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Q: In the figure, a ball of mass m = 56 g is shot with speed v₁ = 23 m/s (in the negative direction of…

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Q: Chapter 09, Problem 058 In the figure, block 2 (mass 1.80 kg) is at rest on a frictionless surface…

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Q: A0. 1kg bullet is fired horizontally at initial speed 10m/s into a 0.9kg wooden block that is…

A: Given data: Mass of bullet is, m=0.1 kg. Initial speed of bullet is, u=10 m/s. Mass of block is,…