sand from a stationary of hoppers falls on to a moving conveyor belt at a rate of 5 kilogram per second the conveyor belt is supported by friction less rollers it moves at a constant speed of 0.75 metre per second under the action of a constant horizontal external force applied by a motor that drives the belt find the sand rate of change of momentum in horizontal direction the force of friction exerted by the belt on the sand

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Q: A knife thrower throws a knife toward a 300 g target that is sliding in her direction at a speed of…

A: Given Data:- Mass of the target is M=300g =300g×10-3 kg1 g=0.300 kg Initial speed of the target is…

Q: The cue ball is moving at speed 2.4 m/s in the positive direction and hits a red ball that is at…

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Q: wooden block (0.50 kg) is at rest on top of the table when an object collided with it. The object…

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Q: piece of clay and a tennis ball are both thrown at a wall with the same velocity. The clay sticks to…

A: Let initial moment of both clay and tennis ball = p  The clay sticks whereas the ball rebounds

Q: A 3,00 kg block resets on a horizontal frictionless table a pendulum is built with a string and a…

A: Conservation of linear momentum principle states that the when two bodies of massm1 and m2 (one…

Q: A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon…

A: Given Data: Total mass is M=91.4 kg Mass of rock is m=0.284 kg Initial speed of wagon is V=0.485 m/s…

Q: Two balls A and B are approaching each other with velocities 5.5m/s and 8.2m/s respectively. The…

A: Given data The velocity of the ball A is given as vA = 5.5 m/s. The velocity of the ball B is given…

Q: A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon…

A: Given data: Total Mass of the wagon, M=97.4 kg Mass of the rock, m=0.267 kg Initial speed of…

Q: A person holds a stick weighing 0.94 kg in his left hand, 9.0 cm from the left end of the stick, and…

A: Given: Force exerted by the ball, Fball = 29 Nmass of bat, m = 0.94 kg

Q: A stationary 2000 kg cannon fires a 25 kg cannon ball horizontally at 250 m/s. Find the velocity of…

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Q: Sand from a stationary hopper falls onto a moving conveyer belt at a rate of 5 kg/s. The conveyer…

A: a)The sand is sitting still on the belt. This means that the rate of change in momentum must be…

Q: A rocket sled with a mass of 2230 kg moves at 210 m/s on a set of rails. At a certain point, a scoop…

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Q: An inelastic collision is one in which kinetic energy before the collision equals kinetic energy…

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Q: A 0.002 kg bullet leaves the barrel of a gun at a speed of 300 m/s. a) Find the kinetic energy of…

A: Given that, Mass of bullet = 0.002 kg Speed = 300 m/s Length of barrel = 0.5 m

Q: A moving cart collides with a stationary cart. The carts stick together and move at the same speed.…

A: In this question we have to select which diagram represents the given situation correctly. Please…

Q: A moving cart collides with a stationary cart. The carts stick together and move at the same speed.…

A: The question represents a moving cart collides with a stationary cart and we have to find the figure…

Q: a 0.50 kg ball moving to the right at 10 m/s collides head on with a stationary ball of mass 0.100…

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Q: A 500-kg sack of coal falls off sideways from a railway car with a mass of 2000 kg, which was…

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Q: A young child is standing on a stationary skateboard. The child and the skateboard together has a…

A: Given Data: Mass of child and skateboard is M = 40 kg. Initially child and skateboard are at rest…

Q: A bullet of mass 0.025 kg is shot at a speed of 35m/s towards a 4kg stationary block. The bullet…

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Q: A cannon is placed on a movable cart (total mass = 50 kg) which can slide on a frictionless…

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Q: A 3000-kg truck moving rightward with a speed of 5 km/hr collides head-on with a 1000-kg car moving…

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Q: A 22 kg bowling ball moving at 4 m/s bounces off of a wall.  What is the change in momentum of the…

A: let say ball is moving towards right side  ( +ve direction ). After hitting the wall, it starts…

Q: A rubber ball and a lump of clay have equal mass. they are thrown with equal speed against a wall.…

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Q: A gymnast falls from the high bar and lands on a 10 cm thick gymnastics mat. The gymnast strikes the…

A: Answer:-  The kinetic energy of an object is the energy possessed by the object due to its motion.…

Q: block of wood provided a decelerating force of -500 N to stop the penetration of a 0.005 kg spear…

A: Given:The deaccelerating force is -500 N. The mass of the spear is 0.005 kg. The initial velocity of…

Q: Three children are standing together on a totally frictionless frozen pond. However, their combined…

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Q: Find the recoil velocity of the cannon

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Q: . A sniper fires a bullet from a 7.5 kg rifle. The rifle recoils toward the sniper at 0.36 m/s2 .…

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Q: A pitcher throws a 0.25 kg ball of clay at a stationary 3.0 kg block of wood. The Clay sticks to the…

A: Let v1 be the initial speed of the ball, and v be the final speed of the combined mass, m be the…

Q: collision

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Q: A physics student hurls a 315-gram ball directly into a 3.54-kg box which is at rest on a table top.…

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Q: A bullet weighing 6.00 g is fired horizontally at a speed of 458 m/s into a wooden block weighing…

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Q: Show that the two objects move away from each other perpendicularly (the velocity vectors of the two…

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Q: A 50 kg student is travelling on a 187 kg raft to the right at 3.5 m/s. The student jumps off the…

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Q: A rubber ball of mass 0.8 kg is dropped and strikes the floor with an initial velocity of 6 m/s. It…

A: Given mass of rubber ball, m = 0.8 kg initial velocity, u = - 6 m/s  ( considering downward…

Q: A baseball strikes the catcher’s glove with a horizontal velocity of 40 m/s. The mass of a baseball…

A: The change in kinetic energy of the ball  ∆T=12mv2-u2∆T=120.15 kg0-40 m/s2=-120 J

Q: A ball with a mass of 0.144 kg is thrown at 28 m/s and hit a book with a mass of 5.25 kg resting on…

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Q: A ball is thrown against a wall; the ball bounces off and returns with speed equal to the speed it…

A: (a) Option A is false, because change in momentum will be, mv--v=2mv   (B) This option is correct,…

Q: Sammy with a mass of 20 kg and his mother the mass of 40 kg are at rest 10 m apart. The father of…

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Q: A motorcycle and a truck are both moving in the same direction in adjacent lanes on a highway. Mass…

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Q: A bus traveling at 15 m/s was hit by a cari is running at a speed of 30 m/s. After the collision the…

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Q: A 1.5-kg cannon is mounted on top of a 2.0-kg cart and loaded with a 52.7-gram ball. The cannon,…

A: According to the momentum conservation principle, the total momentum of the system must be…

Q: The cue ball is moving at speed 2.3 m/s in the positive direction and hits a red ball that is at…

A: When no external force is applied on the system, the momentum of the system is conserved.  Momentum…

Q: An 8-g bullet is fired horizontally to a wooden cube with a mass of 9 kg at rest. The bullet and…

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Q: An empty freight car of mass 10,000 kg rolls at 2 m/s along a level track and collides with a loaded…

A: Given: The mass of the car is 10000 kg. The initial velocity of the empty car is 2 m/s. The mass of…

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?”