1 2500kg railroad car moving with a speed of 3 m/s is linked with a 3500 kg railroad car moving away from the first car with a speed by 1 m/s. Both are moving along a straight track. Find the speed of the two cars just after they link up.

Q: A father of 75-kg took his daughter of 35-kg to ice skating. They push off against one another…

A: Let us consider a father who took his daughter to ice skating. Consider a mass of father be (mf) in…

Q: A 5-kg body with a speed of 4.0 m/s collides head-on with another 10-kg body moving towards it with…

A: Mass of object 1 is Initial velocity of object 1 is Mass of object 2 is Initial velocity of object 2…

Q: The best way to get an old-fashioned wooden sled (which can be quite heavy) going on the snow is to…

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Q: Solution: We may solve this using two approaches. One involves the Newton's Laws and the other…

A: Given :        Gravitational potential energy : PEgrav=- Am1m2r        Force expression :…

Q: A 70.1 kg astronaut is holding a 8.1 kg tool pack while drifting at 10.4 m/s to the right. She…

A: Given data: The mass of astronaut is m=70.1 kg. Mass of tool pack is M=8.1 kg. Velocity of both is…

Q: crane drops a 1.9 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

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Q: The driver of a car (1100 kg) traveling at 30 m/s on dry concrete sees a deer in the distance and…

A: The mass of the car m=1100 kg. The velocity of the car v=30 m/s. Standard values: Coefficient of…

Q: A 200 glider and a 600 g glider are coupled together and move along a frictionless air track at 50…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: A 1500 kg car traveling at 17 m/s suddenly runs out of gas while approaching the valley shown in the…

A: Write the given values of the problem- Mass of the car(m) m=1500 kg speed(u) u=17 m/s

Q: You throw a 0.53-kg baseball with a speed of 12 m/s during a time interval of 4.0 ms.  What is the…

A: Given  mass(m) = 0.53kg speed (v) = 12m/s time(t) = 4ms = 4×10-3 sec   (∵1ms = 10-3 sec)

Q: A canoe is designed to have very little drag when it moves along its length. Riley, mass 52 kg, sits…

A: Given data: The mass is: m2 = 52 kg The mass of the canoe is: m1 = 21 kg The velocity of canoe…

Q: A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf club was in contact…

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Q: A car with mass 996 kg moving at 28 m/s hits a giant bag of marshmallows.  The bag slows the car…

A: Before hitting,  v1 = 28 m/s , m = 996 kg  After hitting ,                 V2 = ? , m = 996 kg…

Q: A curling player with a mass of 50kg, slides at 2m/s due East on a frictionless ice rink while…

A: (a) Given: The mass of the curling player is 50 kg. The speed of the curling player is 2 ms. The…

Q: You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is…

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Q: A volleyball weighing 0.38 kg approaches Zina with a velocity of 3.8 m / s. Zina hits it and gives…

A: Recall Favg=∆P/∆t

Q: A 5 kg dog sits in a stationary, 27 kg sled on a frictionless, icy lake. The dog jumps out of the…

A:

Q: Your mass is 69.6 kg, and the sled s mass is 20.9 kg. You start at rest, and then you jump off the…

A: person's mass, mp=69.6 kgmass of sled, ms=20.9 kginitial speed of both person and sled together, u =…

Q: A 0.38 kg volley ball is traveling at 34 m/s when its hit back over the net by an opposing player…

A: We need to apply the concept of Conservation of energy . The acceleration generated due to the…

Q: A crane drops a 1.8 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

A: Mass of the crane(m)=1.8 kg Initial speed(vi)= -8.1 m/s Final speed (vf) =  3.7 m/s  Momentum…

Q: A runaway train car of mass Mis barreling along some train tracks at speed u when it crashes into a…

A: Given data:  Mass of running train car = M Speed of train car = v Mass of stationary train car = m…

Q: 0.50-kg croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the…

A: Given data: Mass (m) = 0.50 kg Initial velocity (u) = 0 m/s Final velocity (v) = 3.2 m/s Force (F) =…

Q: A freight train is being assembled in a switching yard and so at rest at the beginning. Car 1 has a…

A: Given: The mass of the car1 is m1= 65x103 kg. The velocity of the car1 is 0 m/s. The mass of the…

Q: A 51.9-kg skater is standing at rest in front of a wall. By pushing against the wall she propels…

A: The average force exerted on the wall can be given by Favg=mv-ut

Q: Car B, of mass 1900 kg, was stopped at a red light when it was hit from behind by car A, of mass…

A: (a)Mass of car A=1500 KgLet velocity of car A before collision be U m/sMass of car B= 1900…

Q: A 23 kg child is coasting at 3.6 m/s over flat ground in a 6.0 kg wagon. The child drops a 1.3 kg…

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Q: A crane drops a 1.9 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

A:

Q: Imagine two masses sitting on a horizontal table. There is negligible friction between the masses…

A: Given :      mass, m1 = 4.6 kg      mass, m2 = 13.0 kg      Final velocity of m1,v1 = 6.0 m/s

Q: A confused 53.kg bowler on ice skates is coasting forwards with speed 20 m/s when he catches a…

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Q: a red 755 g cart having a initial speed of 9.85 m/s hits a stationary blue 455-g cart on a physics…

A: Mass of red cart, mr = 0.755 kgMass of blue cart, mb = 0.455 kgInitial velocity of red cart, ur =…

Q: Grandma has a new car that uses rocket brakes to slow it down. The car has a mass of 850 kg. She…

A: Mass of car (m) = 850 kg Initial speed (u) = 12.8 m/s (in forward direction) Final speed (v) = 9.32…

Q: A baseball pitcher throws a 143 g baseball at a velocity of 27 m/s towards home plate. The batter…

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Q: Blythe and Geoff are ice skating together. Blythe has a mass of 50.0 kg , and Geoff has a mass of…

A: Given:- Mass of Blythe =50 kg Mass of Geoff = 75 kg Speed = 3.50 m/s solution:- Suppose, we…

Q: In a collision, a 1200 kg car initially moving at 30 m/s comes to a stop in 0.5 second. The…

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Q: Blythe and Geoff are ice skating together. Blythe has a mass of 53.0 kg, and Geoff has a mass of…

A:

Q: A 53,000-kg rail car is moving at 2.80 m/s as it approaches a conveyor belt. As it passes under the…

A: Given Data : The mass of the rail car is given as m1 = 53000Kg. The velocity of the rail car is…

Q: A football player hits the 500-g ball that comes towards him at a speed of 25 m/s and sends it back…

A: Given: The mass of the ball is m=500 g=0.5 kg. The initial velocity of the ball is u=25 ms. The…

Q: A tennis ball is flying eastward towards a wall with a speed of 32.6 m/s. After bouncing against the…

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Q: You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own…

A: mass of sled (M) = 10.1 kg Person's mass (m) = 3.3 kg Initial velocity of person and sled = 0…

Q: Your mass is 73.3 kg, and the sled s mass is 10.1 kg. You start at rest, and then you jump off the…

A: Given  Mass of man (M) = 73.3 kg Mass of sled (m) = 10.1 kg speed of sled when man jumps from it v…

Q: A 10-m-long glider with a mass of 680 kg (including the passengers) is gliding horizontally through…

A: Given,