The momentum of a system is conserved as long as there is no net external force acting on the system O everything in the system is moving in a circle O everything in the system is at rest O the system is rigged

Kindly answer in 30 min will upvote.

-/1 In the figure, two long barges are moving in the same direction in still water, one with a speed of 11 km/h and the other with a speed of 21 km/h. While they are passing each other, coal is shoveled from the slower to the faster one at a rate of 780 kg/min. How much additional force must be provided by the driving engines of (a) the faster barge and (b) the slower barge if neither is to change speed? Assume that the shoveling is always perfectly sideways and that the frictional forces between the barges and the water do not depend on the mass of the barges.

A woman weighing 61.5 kg stands at one end of a 120-kg raft that is 6.00 m long. The other end of the raft is 0.500 m from a pier. So, before the woman moves, she is at a total distance of 6.50 m away from the pier. The woman walks toward the pier until she gets to the other end of the uniform raft and stops there. What is the distance between the uniform raft and the pier?

A cricket ball of mass 155 g is hit at a speed of 164 km/h straight at a nearby fielder, who catches it. If it takes 391 x 10-3 seconds for the fielder's hands to stop the ball, what is the force (assumed to be constant) between the fielder's hands and the ball? (Units: N)

The free-body diagrams in the figure below give, from overhead views, the horizontal forces acting on three boxes of chocolates as the boxes move over a frictionless confectioner's counter. For each box, is its linear momentum conserved along the x axis and the y axis? (a) 43 N 4 N 6 N 2N 72 N O only conserved along x axis O only conserved along y axis conserved along both x and y axes O not conserved along either axis (b) 8 N 60° 60° 8 N 3 N 2 N 5 N O only conserved along x axis O only conserved along y axis conserved along both x and y axes O not conserved along either axis (c) 6 N 60° 4 N 5 N 60° 6 N O only conserved along x axis O only conserved along y axis O conserved along both x and y axes O not conserved along either axis O O O O

A bat collides with a 0.300 kg baseball over a period of 2.00 ms (m = milli).  If v1=12.0 m/s, θ1=35° and v2=23 m/s, determine the magnitude of the force exerted on the ball by the bat.

A car (VW) and a truck (C) collide inelastically (stick together). The impact is made in a very short time of Δt = 0.1 s. Initial speeds:UVW = 40.0 m / sUC = 30.0 m / sMasses:MVW = 900.0 kgMC = 2000.0 kg d) Determine the average vector accelerationAVW =                     AC = e) Vector average force on C and VW. (Do you notice something important in the results?).FVW =                        FC = f) For the case of truck C, determine its :   ΔP = Solve all subsections

Three point masses are placed at the corners of a triangle as shown in the figure below. 90 g 2 cm 3 cm 130 g 200 g Find the center of mass of the three-mass system (in cm). (Assume that the +x-axis is to the right and the +y-axis is up along the page. Take the origin to be at the position of the 200 g mass.) XCM = cm Усм cm

When two object collide in an isolated system, the forces that act on each object at the moment of collision are __________.   Group of answer choices greater on the object with less initial momentum greater on the object traveling the slowest greater on the object traveling the fastest equal and opposite greater on the object with more initial momentum greater on the more massive object greater on the less massive object