A railroad car moves under a grain elevator at a constant speed of 3.20 m/s. Grain drops into the car at the rate of 540 kg/min. What is the magnitude of the force needed to keep the car moving at constant speed if friction is negligible?

Q: A 25 kg crate is released at the top of a ramp tilted at 40 degrees above the horizontal if the…

A: Given : mass of crate, m = 25 kg Coefficient of kinetic friction, μk = 0.3 Angle of inclination =…

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: What average force is necessary to stop a 16 g bullet travelling at 260 m/s as it penetrates into a…

A: Using kinematic equation, the expression for find acceleration of the bullet is v2=u2+2asa=v2-u22s…

Q: A 9.00 g bullet is fired horizontally into a 1.20 kg wooden block resting on a horizontal surface.…

A: Whenever there is collision between two bodies, the energy and momentum of the system remains…

Q: a 3000 kg truck is driving at 20 m/s north. it collides head-in with a 1200 kg car travelling south…

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Q: A. Find V'x B. Find V'y C. Represent V' graphically

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: LA 3 kg steel ballI falls down vertically and strikes a floor with a speed of 12 m/s. It bounces off…

A: Given data:  Mass (m) = 3 kg Initial velocity (Vi) = -12 m/s Final velocity (Vf) = +12 m/s Time…

Q: An arrow with a mass of 250 g has a speed of 27 m/s before it passes through a 1.5 cm piece of…

A: MA = Mass = 250 g = 0.250 Kg , Vi = Velocity = 27 m/s T = d = thickness = 1.5 cm = 0.015 m Vf =…

Q: A 730 N man stands in the middle of a frozen pond of radius 4.0 m. He is unable to get to the other…

A: Let W be defined as the weight of the man. Therefore, W=mgm=Wg Here, W is the weight of the man. g…

Q: A baseball (m = 152 g) approaches a bat horizontally at a speed of 43.6 m/s (97.6 mi/h) and is hit…

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Q: We commonly see Superman being shot and bullets bounce off of him.  Suppose Mr. Bad shoots Superman…

A: Given values: Mass of each bullets, m=4.00 kg Rate of bullets, r=100 bullets/min Time, t=5.00 s…

Q: A 75 kg fisherman in a 135 kg boat throws a pile of 0.80 kg rocks towards the shore. If he throws…

A: mass of fisherman = 75 kg mass of boat = 135 kg mass of pile of rocks = 0.8 kg speed of each rock =…

Q: reviews the approach that is necessary for solving problems such as this one. A baseball (m = 148 g)…

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Q: a man of mass m= 70kg stands on one end of a flatboat which is always moving horizontally without…

A: The given data are listed below with appropriate variables. Here, m denotes the mass of a person, M…

Q: A 748 g rubber ball was vertically pushed downward at 1.21 m/s from a height of 78.2 cm above a…

A:

Q: An open train car, with a mass of 2190 kg, coasts along a horizontal track at the speed 2.17 m/s.…

A: Let us calculate the car speed v, as shown below:

Q: package of mass m = 15 kghorizontally toward the right with a speed of vi = 4.2 m/s as in the figure…

A: Given: The mass of the fisherman m1=76 kg The mass of the boat m2=112 kg The mass of the package…

Q: A hockey player with a mass of 53.5 kg is traveling due east with a speed of 2.90 m/s. A second…

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Q: A soft ball (m = 0.14 kg) moving horizontally to the right hits a wall with a speed of 16.2 m/s.…

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Q: An arrow of mass 40 g is shot horizontally into a bale of hay, striking the hay with a velocity of…

A: Force is given by the product of mass and acceleration. However, in this case as we are calculating…

Q: A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc =…

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Q: Auto companies frequently tests the safety of the automobiles by putting them through crash tests to…

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Q: In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is…

A: Apply principle of conservation of momentum along horizontal and vertical direction Along horizontal…

Q: A 0.0200-kg bullet is shot horizontally and collides with a 3.65-kg block of wood. The bullet embeds…

A: We can solve the above question using conservation of momentum and work-energy theorem.   Note:- as…

Q: 6. A7.0 g bullet is fired into a 1.5 kg block and becomes embedded in the block. After the…

A: Let vA be defined as the speed of the bullet prior to striking the block. Let V be defined as the…

Q: A 0.24–kg volleyball approaches Tina with a velocity of 3.3 m/s. Tina bumps the ball, giving it a…

A: To determine: The average force applied by tina, when the volleyball approaches tina   Given: Mass…

Q: A 0.543-kg ball, initially moving with a speed of 2.67 m/s, bounces off a wall and then moves with a…

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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: A 874 g rubber ball was vertically pushed downward at 1.18 m/s from a height of 88.5 cm above a…

A:

Q: A 0.0052kg bullet moving at 672m/s strikes a 0.7kg wooden block at rest on a frictionless surface.…

A:

Q: A 22-g puck hits the wall of an air hockey table perpendicular to the wall with an initial speed of…

A: Given: The mass of the puck is 22 g. The striking velocity is 14 m/s. The rebounding velocity is 14…

Q: Ball A (ma = 0.800 kg) strikes ball B (mg = 0.800 kg) which is initially hanging from an…

A: Mass of  ma =0.8kg Mass of mb = 0.8kg Velocity of A vA1= 1.5m/s Collision is perfectly elastic

Q: Suppose a clay model of a koala bear has a mass of 0.240 kg and slides on ice at a speed of 0.745…

A: Given: mass of koala bear, m1 = 0.240 kg initial velocity of koala bear, u1 = 0.745 m/s mass of…

Q: A very hard rubber ball (m = 0.2 kg) is falling vertically at 5 m/s just before it bounces on the…

A: Given: The mass of the ball is 0.2 kg. The speed of the ball just before hitting the floor is 5 m/s.…

Q: Emma and Katie are racing along in their new wagon. Upon reaching the bottom of the hill traveling…

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Q: Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides…

A: We have the equation Favg∆t=I Where  I is the impulse Favg is the average external force acting on…

Q: A 105-kg rugby player is initially running at 7.5 m/s in the positive direction, but collides…

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Q: Freight car A with a gross weight of 152000 lb is moving along the horizontal track in a switching…

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Q: A 75.0 kg fullback running east with a speed of 4.00 m/s is tackled by a 91.0 kg opponent running…

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Q: Two pucks collide on an air hockey table. Puck A has a mass of 30.0 g and is initially traveling in…

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Q: Two blocks slide on a collision course across a frictionless surface, as in the figure. The…

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Q: In the figure, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2 m and…

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Q: In the figure here, a 7.0 g bullet moving directly upward at 870 m/s strikes and passes through the…

A: Using the law of conservation of momentum,

Q: A block of mass 5M is attached to a very light horizontal spring of force constant k= 100 N and is…

A: Solution: Given that Block mass = 5M stone mass = M block initial velocity vi = 33 m/s block final…

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”