An open train car, with a mass of 2070 kg, coasts along a horizontal track at the speed 2.39 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.69 s at the rate of 423 kg/s. What is the car's speed vf after the loading is completed? Ignore rolling friction. vf = ? m/s
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 person slaps her leg with her hand, bringing her hand to rest in 260 ms from an initial speed of…
A:
Q: A 0.350 kg hammer is moving horizontally at 4.00 m/s when it strikes a nail and comes to rest after…
A: Given : mass of hammer, m = 0.350 kg Initial velocity, u = 4.00 m/s Final velocity, v = 0…
Q: The trick to skipping a rock is throwing it at a low angle. This is because the surface tension of…
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: 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: 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 200 g baseball travelling at 40 m/s is hit by a bat. It travels straight back at the pitcher at a…
A: Mass of the baseball (m) = 200 g = 0.2 kgInitial velocity (u) = 40 m/sFinal velocity (v) = -50 m/s…
Q: A tennis ball (m = 0.2 kg) is thrown at a brick wall. It is traveling horizontally at 19 m/s just…
A: The expression for impulse is, impulse=F∆t (I) F=force,∆t=time Impulse is defined…
Q: Two carts, labeled 1 and 2, are headed toward each other along a level track. Both carts roll…
A: Given: m1 = 21.3 kgm2=3.11kgv1i=u1 = 1.9 m/sv2i=u2=-1.8 m/slet final speed are v1 and v2
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 crane drops a 1.8 kg steel ball onto a steel plate. The ball's speeds just before impact and after…
A:
Q: A 0.180 kg hockey puck is moving on a frictionless, horizontal icy surface. At t = 0, the puck is…
A:
Q: 4 2 with an initial speed A small ball of mass m is thrown at t = 0 from a height I = 65 m t₁ = 14…
A: We are given height from where the ball is thrown. We first find the speed of ball at given time. We…
Q: A bullet of mass 5.00 g is fired horizontally into a wooden block of mass 1.24 kg resting on a…
A:
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: In a ballistics test, a 28-g bullet pierces a sand bag that is 30 cm thick. If the initial bullet…
A: Solution: Determine the change in kinetic energy of the bullet while it travelled through the bag.…
Q: Xyrus throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5…
A: Force is defined as the rate of change of momentum. F= dP/dt P= m*v
Q: A 7.00-kg7.00-kg block is sent up a ramp inclined at an angle ?=30.0∘θ=30.0∘ from the horizontal. It…
A:
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: A 38.0 g balled is launched from ground level at an angle of 21.0° above the horizon. Its initial…
A: The x-component of the velocity of the ball at an instant after the ball is launched. vx = 21*cos21…
Q: m1 In the picture below, a 3.5 kg turtle is initially falling towards the water at 3.5 m/s. If the…
A:
Q: The coefficient of friction between the block of mass m₁ = 3.00 kg and the surface in the figure…
A:
Q: and the mass of the bag is 0.45 ??. The board is at an incline of 15° above the horizontal. a. Draw…
A: Given: m=0.45 kg θ=15o
Q: The mass of a particular eagle is twice that of a hunted pigeon. Suppose the pigeon is flying north…
A: Mass of the eagle=M1 Mass of the pigeon=m2
Q: You have two identical cars, both of mass 2,459 kg. The first one is moving to the left with an…
A:
Q: A rocket in deep space has an empty mass of 190 kg and exhausts the hot gases of burned fuel at 2500…
A: Rocket mass (m)=190 kg Fuel exhausts speed (u)=2500 m/sFinal speed (v)=4000 m/s
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: A 3 kg ball traveling to the right with a speed of 4 m/s collides with a 5 kg ball traveling to the…
A:
Q: A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the…
A: Given,
Q: 3. A 10 g bullet is fired into a 2.00 kg block sitting on a horizontal frictionless surface. The…
A: Given m=10g=0.01kg, M=2kg, θ=40⁰, μ=0.10, d=4.00m
Q: The mass of particle 1 is 12.9kg, and its initial velocity is v_1i = (27m/s)i + (3m/s)j.…
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: A 719-N man stands in the middle of a frozen pond of radius 4.0 m. He is unable to get to the other…
A: GIVEN: Force = 719N radius =4m mass of textbook =1.2kg speed of book = 4m/s
Q: A 0.400 kg hammer is moving horizontally at 4.00 m/s when it strikes a nail and comes to rest after…
A:
An open train car, with a mass of 2070 kg, coasts along a horizontal track at the speed 2.39 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.69 s at the rate of 423 kg/s. What is the car's speed vf after the loading is completed? Ignore rolling friction.
vf = ? m/s
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- answer both questions.. Q25.. only typingA 6-g bullet is shot into a 2.1-kg block of wood, where it becomes embedded. The block is initially at rest and the bullet has an initial velocity of 400 m/s. The block then travels 1.2 m horizontally. What is the coefficient of kinetic friction between the block and the surface?Figure 1 The positive direction 1i 2i m1 m2 "The lab frame:" This track is not moving.
- lower a crate of mass ?1=5.00 kgm1=5.00 kg to the bottom of a steep ravine of height ?=25.0 mH=25.0 m. The crewman of mass ?2=55.6 kgm2=55.6 kg is walking while holding the rope, being careful to lower the crate at a constant speed of ?0=1.50 m/sv0=1.50 m/s. Unfortunately, when the crate reaches a point ℎ=13.9 mh=13.9 m above the ground, the crewman steps on a slick patch of ice and slips. The crate immediately accelerates toward the ground, dragging the hapless crewman across the ice and toward the edge of the cliff. Assuming the ice is perfectly slick, so that there is no friction between the crewman and the ice once he slips and falls down, at what speed ?1v1 will the crate hit the ground? Assume also that the rope is long enough to allow the crate to hit the ground before the crewman slides over the side of the cliff, and that the pulley is frictionless. ?1A 50.0 kg astronaut is standing on a 250.0 kg space capsule. He pushes off from the space capsule with a velocity of 10.0 m/s. How long does it take for him to reach a point 50.0 m away from the space capsule? (Hint: Not 5 seconds!)A 14.4-g wad of sticky clay is hurled horizontally at a 71-g wooden block initially at rest on a horizontal surface. The clay sticks to the block. After impact, the block slides d=11 m before coming to rest. The coefficient of friction between block and surface is µk=0.56. What is the normal force caused by the ground on the block/blob (again, consider them as one mass)? 2. What is the frictional force on the block/blob? 3. What is the work done by friction on the block/blob?
- A 7.00 g bullet is fired horizontally into a 1.20 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and Part A surface is 0.20. The bullet remains embedded in the block, which is observed to slide 0.390 m along the surface before stopping. What was the initial speed of the bullet? Express your answer with the appropriate units. HÀ ? Value Units V = Submit Previous Answers Request AnswerA 5-cm-diameter horizontal jet of water with a velocity of 40 m/s relative to the ground strikes a flat plate that is moving in the same direction as the jet at a velocity of 10 m/s. The water splatters in all directions in the plane of the plate. How much force does the water stream exert on the plate?Kyle, a 80.0 kg football player, leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 0.437 m off the ground. He hits the ground 0.0358 m away from where he leapt. If the ball was moving horizontally when it was caught, how fast u was the ball traveling? Vs m/s
- 7. During a snowball fight, a 0.30-kilogram snowball traveling at a speed of 17.0 m/s hits a student in the back of the head. If the contact time is 0.10 s, what is the magnitude of the average force on the student's head? N ssf f60° Ossi 09 JS 50 ssf60A 38.0 g balled is launched from ground level at an angle of 21.0° above the horizon. Its initial speed is 21.0 m/s. What is the value of px (in kg*m/s) an instant after the ball is launched? What is the value of py (in kg*m/s) an instant after the ball is launched?A crane drops a 1.7 kg steel ball onto a steel plate. The ball's speeds just before impact and after are -8.5 m/s and 5.3 m/s, respectively. If the ball is in contact with the plate for 0.048 seconds, what average force does the ball exert on the plate during impact?