An open train car, with a mass of 2050 kg, coasts along a horizontal track at the speed 2.792.79 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.792.79 s at the rate of 475 kg/s. What is the car's speed vf after the loading is completed? Ignore rolling friction.

Q: A 0.400 kg hammer is moving horizontally at 4.50 m/s when it strikes a nail and comes to rest after…

A: Time =4.44 ×10-3 s Force = 405.4 N

Q: A 7100-kg railroad car travels alone on a level frictionless track with a constant speed of 16.0 m/s…

A: Given that, A 7100-kg railroad car constant speed of 16.0 m/s A 2650-kg load initially at rest, is…

Q: A tennis ball of mass 0.0621 kg is served. It strikes the ground with a velocity of 54.0 m/s (120…

A: Mass, m = 0.0621 kg  Velocity, v = 54 m/s Δt=0.0630 s  Δvx=53cos18ᵒ-54cos(-22ᵒ)…

Q: A 7100-kg railroad car travels alone on a level frictionless track with a constant speed of 16.0 m/s…

A: Using the conservation of momentum,

Q: A 4.6-g bullet leaves the muzzle of a rifle with a speed of 328 m/s. What force (assumed constant)…

A:

Q: A 0.200 kg hammer is moving horizontally at 9.00 m/s when it strikes a nail and comes to rest after…

A: Mass of hammer (m)= 0.200 kg  Initial speed of hammer (u) = 9m/s  Final speed of hammer (v)= 0m/s…

Q: An uncovered hopper car from a freight train rolls without friction or air resistance along a level…

A:

Q: 7. A 68.5-kg skater moving initially at 2.40m/s on rough horizontal ice comes to rest uniformly in…

A: Given :             u= 2.4 m/s             v=0             t= 3.52            m= 68.5 kg From first…

Q: regulation 145 g baseball can be hit at speeds of 3.0 mph. Part A If a line drive is hit essentially…

A: Given: The mass of the baseball is 145 g. The initial speed of the baseball is 98 mph. The mass of…

Q: An astronaut in her space suit has a total mass of87.0 kg, including suit and oxygen tank. Her…

A: Part A:

Q: A 1.00x104 kg railroad car is rolling at 6.00 m/s when a 4000 kg load of gravel is suddenly dropped…

A:

Q: A small block of mass m 1 = 0.500 kg is released from rest atthe top of a curved wedge of mass m 2…

A: Given:Mass of block m1 = 0.5 kgMass of the wedge m2= 3 kgVelocity of the mass m1 after it leaves the…

Q: A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the…

A:

Q: A 46.0-kg girl is standing on a 147-kg plank. Both originally at rest on a frozen lake that…

A: Mass of the plank mp=147 kg Mass of the girl mg=46 kg Velocity of the girl relative to the plank…

Q: A cart with mass mc = 850g is rolling along a frictionless track with a speed of vcj=9.00 m/s. A…

A: Given: The mass of the cart is, mc=0.850 kg The initial velocity of the cart alone is, vi=9 m/s The…

Q: A 45.0 kg girl is standing on a 142 kg plank. The plank, originally at rest, is free to slide on a…

A:

Q: (a) A 11.0 g wad of sticky clay is hurled horizontally at a 120 g wooden block initially at rest on…

A: Note :- We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: A firework shell of mass m launched into the air and exploded when it reaches its highest point of…

A: Relevant theory: Newton's first law states that an object in a state of rest or motion remains in…

Q: A 550 g cart is released from rest on a frictionless, 45 ° ramp, 120 cm from the bottom of the ramp.…

A: Concept: Newton's second law states that an object's momentum changes as a result of a force acting…

Q: A 14.4-g wad of sticky clay is hurled horizontally at a 71-g wooden block initially at rest on a…

A:

Q: 2. A0.200kg softball is pitched at 35m/s and leaves the bat at 55m/s straight towards second base.…

A: Given: Mass of ball, m=0.200 kg Initial velocity, vi=-35 m/s   (-ve sign indicates the direction of…

Q: A 0.544-kg ball, initially moving with a speed of 2.54 m/s, bounces off a wall and then moves with a…

A:

Q: a 4.6-g bullet leaves the muzzle of a rifle with a speed of 332 m/s. What force (assumed constant)…

A: Write the kinematic relation between initial and final velocity

Q: Four railroad cars, each of mass 3500 kg, are coupled together and coasting along horizontal tracks…

A: The system here is the 4 cars and the actor included. The force exerted by the actor and the push…

Q: A 20.0-kg toboggan with 83.5-kg driver is sliding down a frictionless chute directed θ = 28.5° below…

A: The mass of the toboggan is 83.5kg, mass of the women is 55.0 kg, angle of inclination is 28.5…

Q: A 55 g tennis ball approaches a player horizontally at a speed of 8.0 m/s. The player hits the ball…

A:

Q: A 160 g baseball is thrown with a speed of 20 m/s. It is hit straight back toward the pitcher at a…

A:

Q: A 65.0 kg  diver, dives horizontally off a 375 kg raft initially at rest. If the diver's speed…

A:

Q: A 81.5 kg linebacker (X) is running at 6.35 m/s directly toward the sideline of a football field. He…

A:

Q: A 4.0-g bullet leaves the muzzle of a rifle with a speed of 338 m/s. What force (assumed constant)…

A: Given data:  Mass (m) = 4.0 g = 4.0×10-3 kg Initial velocity (u) = 0 m/s Final velocity (v) = 338…

Q: A 7100-kg railroad car travels alone on a level frictionless track with a constant speed of 16.0…

A: Given that:-Mass of railroad car, m1=7100 kgMass of load, m2=2650 kgSpeed of car, v1=16 m/secWe know…

Q: Realizing that he could not drive up a 35.0°, ice-covered hill because there was no friction, Rick…

A: SOlution: Given that m1 = 4x102 kg m2 = 2x103 kg v2 = 20 m/s

Q: For a safe reentry into Earth's atmosphere, the pilots of a space capsule must reduce their speed…

A:

Q: In a ballistics test, a 25.0 g bullet traveling horizontally at 1200 m/s goes through a 40.0 cm…

A: Given: Mass of bullet is 25 g Initial velocity is 1200 m/s Thickness 40 cm final speed is 900 m/s

Q: You wake up one morning to find yourself in a strange room with opaque walls, and no visible doors…

A:

Q: A 160 g baseball is thrown with a speed of 20 m/s. It is hit straight back toward the pitcher at a…

A:

Q: 107.5-kg rugby player is initially running at 8.5 m/s in the positive direction, but collides…

A:

Q: A mine car, whose mass is m1 = 441 kg, rolls at a speed of v1 = 0.517 m/s on a horizontal track, as…

A: Concept:

Q: During a squash game, a player hits the ball, of 24 g, which is moving toward him horizontally at…

A: m=241000 Kg (mass of the ball)u=-150 Km/h (initial velocity of ball before…

Q: A 850 g cart is released from rest on a frictionless, 45 ∘ ramp, 120 cm from the bottom of the ramp.…

A: