In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.20 m/s and collides with an initially stationary, fully loaded boxcar of mass 5.80m. The two cars couple together on collision. (a)What is the speed of the two cars after the collision? ___m/s (b)Suppose instead that the two cars are at rest after the collision. With what speed was the loaded boxcar moving before the collision if the empty one was moving at 1.20 m/s? ___m

Q: Let's try sample problem: Two balls A and B are approaching each other with velocities 5.5 m/s and…

A: In solution it assume that: If ball is moving to the right than velocity is positive  If ball is…

Q: A 45 kg boy jumps on a stationary cart with luggage. The velocity of the boy when he jumps is 5.3…

A: Using the conservation of momentum, m1u1+m2u2=m1+m2vm1u1=m1+m2v                  u2=0v=m1u1m1+m2

Q: A stationary quarterback is tackled by a 89 kg linebacker travelling with an initial speed of 5.2…

A: Let the mass of the quarterback be m1 And the mass of the linebacker is (m2)= 89 kg Initial speed of…

Q: At one particular moment, a 19.0 kg toboggan is moving over a horizontal surface of snow at 3.70…

A: The expression used to find momentum is p=mv Substitute values in the above equation…

Q: Suppose a lump of clay has a mass of 0.2 kg and it slides without friction across ice at a speed of…

A: The objective of this question is to find the speed of two lumps of clay after they collide and…

Q: ! Required information In the railroad freight yard, an empty freight car of mass m rolls along a…

A:

Q: A toy car having mass m = 1.30 kg collides inelastically with a toy train of mass M = 3.55 kg.…

A: (a) Using conservation of momentum,

Q: Two cars collide at an intersection. Car A, with a mass of 2000 kg, is going from west to east,…

A:

Q: Block A of mass m = 1.05 kg moving on a horizontal plane with velocity of vi = 1.71 m/s collides…

A: Momentum is defined as the product of the mass and velocity of the object. If the net force acting…

Q: At one instant, a 15.0-kg sled is moving over a horizontal surface of snow at 4.50 m/s. After 6.55 s…

A:

Q: An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass…

A:

Q: Two identical cars A and B are moving as shown below. Car B moving with speed of 13 m/s collides…

A:

Q: Problem 3: A cue ball of mass m₁0.31 kg is shot at another billiard ball, with mass m₂ 0.555 kg,…

A:

Q: Two cars, one with mass m1 = 1200 kg and the other with mass m2 =1050 kg crash in an intersection.…

A: Mass of vehicle A, mA=1200 kg Mass of vehicle B, mB=1050 kg Initial velocity of vehicle A, vA=17 m/s…

Q: An object of mass  m = 4.87 kg  that is moving with a speed of 14.2 m/s collides head-on with…

A: The mass of the object, m=4.87 kg The initial velocity of the object, v0=14.2 m/s The time interval…

Q: A 1050 kg sports car is moving westbound at 15.0 m/s on a level road when it collides with a 6320 kg…

A: a. Let east be the x direction. According to the conservation of momentum, m1v1+m2v2=m1+m2v

Q: A car (of mass 1500 kg) and a small truck (of mass 2000 kg) collide suddenly at right angles at an…

A:

Q: Two identical 1350-kg automobiles A and B are at rest with their brakes released when B is struck by…

A:

Q: bullet is fired into a block of wood sitting on a block of ice. The bullet has an initial velocity…

A:

Q: Two vehicles approach a right angle intersection and then collide. After the collision, they become…

A: Let the two vehicles be A and B approach a right-angle intersection and then collide.After the…

Q: A girl of mass 47.0 kg jumps off the bow of a 66.0-kg canoe that is initially at rest. If her…

A: According to conservation of momentum -  Initial momentum = Final momentum  Expression for momentum…

Q: Two carts on a straight track collide head on. The first cart was moving at 3.6 m/s in the positive…

A:

Q: Block A has a mass of 2kg and a speed of 50 m/s along the positive x axis.  Block B has a mass of 4…

A: Given data: Mass of Block A is, mA = 2 kg The initial speed of block A is, vAi = 50 m/s Mass of…

Q: A railroad car coasting towards the right at a speed of 5 m/s runs into a set of three other cars…

A: (a) The speed of the coupled set after the impact is mvi=4mvfvf=14vi=145 m/s=1.25 m/s

Q: Before collision, Car A and B were initially traveling Westward and Southward, respectively. The…

A: Law of conservation of momentum states that the momentum before collision is equal to the momentum…

Q: a student of mass m1= 64 kg runs towards his skateboard, which has a mass m2= 2.9kg and is d=2.85m…

A: Given data:  Mass of the student (m1) = 64 kg Mass of skateboard (m2) = 2.9 m Initial velocity of…

Q: A mass m1= 3kg slides down slippery ramp, reaching a speed v=9 m/s at the bottom. After reaching…

A: a) initial kinetic energy converted potential energyputting v = 9m/s, g =9.8m/s2

Q: Consider two hockey pucks, each with mass 1.25 kg, on frictionless ice. Puck A is initially moving…

A: Given, Two hockey pucks have equal mass and they collide

Q: with a mass of 970 kg and a speed of v1 = 17.5 m/s approaches an intersection, as shown in the…

A: In all collision momentum conserved and also conserved along x axis and y axis.