Mary slides down a snow-covered hill on a large piece of cardboard and then slides across a frozen pond at a constant velocity of +2.5 m/s. After Mary has reached the bottom of the hill and is sliding across the ice, Sue runs after her at a velocity of +4.4 m/s and hops on the cardboard. Mary's mass is 70 kg and Sue's is 56 kg. How fast (in m/s) do the two of them slide across the ice together on the cardboard? Ignore the mass of the cardboard and any friction between the cardboard and the snow and/or ice. (Indicate the direction with the sign of your answer.)

Q: On a very muddy football field, a 110 kg linebacker tackles an 85 kg halfback. Immediately before…

A: M = 110 kg  m = 85 kg  U = 8.8 m/s north  u = 7.2 m/s east

Q: 8.41 • At the intersection of Texas Avenue and University Drive, a yellow subcompact car with mass…

A:

Q: A 1.2 kg ball is falling in the -y direction at a speed of 25 m/s. The ball strikes the floor and…

A: Mass of ball (m)=1.2 kg Speed  in negative y direction (v1)=-25 m/s Speed of the ball after…

Q: A 0.15 kg arrow with a velocity of 18 m/s to the east strikes and pierces an 8-kg target at rest.…

A: Given that, m1=0.15 kgv=18 m/sm2=8 kg According to the conservation of momentum the initial momentum…

Q: A 300 Kg red bumper car is traveling with a velocity of +2.5 m/s. Over a 0.5 second time frame it…

A: In elastic collision, momentum and kinetic energy of system conserved. Kinetic energy;…

Q: Two boxes collide - box A of mass 3.0 kg, and box B of mass 5.5 kg. Box A is initially moving to the…

A:

Q: "You (50-kg mass) skate on ice at 4.0 m/s to greet your friend (40-kg mass), who is standing still,…

A: Given  Mass m1=50kg Initial velocity u1=4m/s Mass m2=40kg Initial velocity u2=0

Q: One ball of mass 0.600 kg traveling 9.00 m/s to the right collides head on elastically with a second…

A: The initial relative velocity and final relative velocity of the system is constant in the elastic…

Q: Two football players with a mass of 75 kg and 100 kg run directly toward each other with speeds of 6…

A:

Q: A 1,000-kg car is initially traveling due east at 26 m s when it collides with a 2,000-kg truck that…

A: Given:mass of the car, m = 1000 kgintial velocity of car, u = +26 m/smass of the truck, M = 2000…

Q: A 1.33 x 10 kg railroad car moving at 7.26 m/s to the north collides with and sticks to another…

A:

Q: A blue ball of mass 0.350 kg traveling at 2.60 m/s to the left collides with a red ball of mass…

A:

Q: A women with the mass 101 kg is standing on a cart with the mass of 351 kg. He jumps off the cart at…

A: Mass of Women is m = 101 kg  Mass of the cart is M = 351 kg  Speed of women relative to the car is V…

Q: A car of mass 850 kg moves with a speed of 32 m/s and collides head on with a truck of mass 1300 kg…

A: in this question  we use conservation law of momentum.

Q: A block of wood of mass 0.95 kg is initially at rest. A bullet of mass 0.050 kg traveling at 100.00…

A:

Q: 7. Misma, an aspiring figure skater, collides with Mehr, a rival figure skater, who had an initial…

A: Given data: The initial velocity of Mehr is V1i=3.5 m/si. The mass of Mehr is m1=55 kg. The final…

Q: Two vehicles of masses m1 = 8000 kg and m2 = 82 x 100 kg undergo collision such that they travel…

A: The given data are: m1=8000 kgm2=82×100 kgu1=10 m/su2=-9 m/s Here, u1 denotes the velocity of the…

Q: Hinata throws a 0.3-kg volleyball at the wall. With a velocity of 3.2 m/s, the volleyball hits the…

A: Given in question - Mass of the volleyball (m) = 0.3 Kg                                   Initial…

Q: During a fireworks display, a  0.300-kg  bottle rocket approaches the top of its trajectory and…

A: Use the conservation of momentum along the X direction.

Q: Two rocks collide in outer space. Before the collision, one rock had mass 13 kg and velocity m/s.…

A:

Q: A pick up truck that is 5000 kg is moving at 5m/s East and it collided with a 20000 kg car moving at…

A: Given: m1=5000 kg u1=5 m/s m2=20000 u2=30 m/s θ=30

Q: determine the magnitude of the change in momentum of a 250-g ball moving at 13.0 m/s that bounce off…

A:

Q: A 328 kg car moving at 19.1 m/s hits from behind another car moving at 13.0 m/s in the same…

A: Answer:- (A) 14.0 m/s Given  Mass of first car(m1) = 328 kg   Velocity of first car before Collision…

Q: Two carts of equal mass M = 4.2 kg approach each other and collide. Before the collision, Cart A is…

A: Dear student We can conserve the momentum when there is no external force acting on the system. The…

Q: A 1200-kg car moving at 15.6 m/s suddenly collides with a stationary car of mass 1500 kg. If the two…

A:

Q: A 2.0 kg cart moves forward at 5.0 m/s, when it is struck from behind by a 0.50 kg cart moving at 15…

A: We will solve the above question using the conservation of momentum.

Q: A large fish with mass 4.9 kg suddenly accelerates to a velocity 3.3 m/s to the right to gobble up a…

A: given that  mass of large fish =4.9 kg velocity =3.3 m/s mass of small fish = 0.4 kg velocity =0.8…

Q: A 0.12-kg ball is moving at 6 m's when it is hit by a bat, causing it to reverse direction and have…

A: Given data:  Mass (m) = 0.12 kg Initial velocity (Vi) = 6 m/s Final velocity (Vf) = -14 m/s…

Q: A space ship with a mass of 2 x 10° kg is cruising at a speed of 5 x 10° m.s' when it blows up into…

A:

Q: A 2.0 kg ball moving eastward at 3.0 m/s suddenly collides with and sticks to a 4.0 kg ball moving…

A:

Q: In an elastic collision, an object with momentum 25kg•m/s collided with another object moving to the…

A: Given in question -  Initial momentum of the first object (P1) = 25 kg•m/s…

Q: A car of mass 1000 kg moves to the right along a level, straight road at a speed of 6.0 m/s. It…

A:

Q: Two skaters, both of mass 50 kg, are on skates on a frictionless ice pond. One skater throws a 0.2…

A:

Q: A 8 kg bowling ball is moving at a speed of 6 km/h, west direction. The momentum of the ball is O a.…

A:

Q: Mary slides down a snow-covered hill on a large piece of cardboard and then slides across a frozen…

A:

Q: A 75.0-kg paint cart with rubber bumpers is rolling 0.965 m/s to the right and strikes a second cart…

A:

Q: A 30.0-g bullet is fired into a stationary block of wood (m = 3.00 kg). The relative motion of the…

A: Given data: Mass of bullet is, m=30.0 g=30.01000=0.03 kg. Mass of wooden block is, M=3.00 kg.…

Q: A train of mass m1 = 1400 kg is moving at a velocity of 14 m/s collides with a second train of mass…

A:

Q: Mr. Haradem pitches a 0.20 kg baseball with a speed of 40.0 m/s and then Ms. Lamb batted to the ball…

A:

Q: Hockey puck A slides along a sheet of frictionless ice, moving due east with speed 2.80 m/s. It then…

A:

Q: 4 A white ball of mass 0.50 kg moving at 10.0 m/s collides with a 0.40 kg black ball initially at…

A: Given: The mass of the white ball is 0.5 kg. The initial velocity of the white ball is 10 m/s. The…