The firing of a bullet by a rifle causes the rifle to recoil backwards. The speed of the rifle's recoil is smaller than the bullet's forward speed because the a momentum of the rifle is unchanged O b speed is mainly concentrated in the bullet force against the rifle is relatively small d none of these e rifle has lots of mass ООООО

Q: Taking the density of air to be 1.29 kg/m3, what is the magnitude of the linear momentum of a cubic…

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Q: A moving object A of mass 1,370 kg and speed 3.5 m/s collides with a stationary object B of mass…

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Q: A 71.25 kg motorcycle is moving at 24.75 m/s. The momentum is__________.

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Q: how do you Determine the pre-collision momentum of A fullback (86.0 kg) and a defensive back (81.6…

A: Write the given data. mf=86 kgvf=7.03 m/smd=81.6 kgvd=8.71 m/s

Q: Momentum is conserved in all collisions. True or False

A: solution As there is no external force acting on the system so the momentum remains conserved in all…

Q: 0.50-kg ball traveling at 6.0 m/s collides head-on with a 1.00-kg ball moving in the opposite…

A: Write the given values of the problem- m1=0.50 kgm2=1.00 kgv1=6.0 m/sv2=-12.0 m/svf1=-14 m/s

Q: An impulse of 100N s is applied to an object. If this same impulse is delivered over a longer time…

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Q: For the same force, a long cannon imparts a greater impulse to a cannonball than a short cannon…

A: Impulse is equal to the change in momentum. The expression for the impulse is given by : J=F∆t where…

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A: Answer(2) -----(a) increase the impact time. Because  This is because when the time of impact…

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Q: A basketball player drops a 0.5 kg basketball vertically so that it is traveling at 5.0 m/s when it…

A: A ball hits the ground and rebounds. We need to calculate the change in momentum and the average…

Q: A golf ball is fired at a bowling ball, initially at rest. After the collision, the golf ball…

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Q: A cart bounces off a wall. The cart's change of momentum (Delta px) is (Take positive in the right…

A: Given data The initial velocity of the cart is given as u = 2 m/s. The final velocity of the cart…

Q: A cart with a mass of 2.0 kg is traveling at 8.6 m/s. It strikes a barrier and recoils with a speed…

A: Impulse is nothing but the change in momentum. So all we have to find is the change in the momentum.

Q: A 17-kg child is coasting at 2.60 m/s over flat ground in a 3.90-kg wagon. The child drops a 0.60-kg…

A: Given: The mass of the child is 17 kg. The initial speed of the child is 2.6 m/s. The mass of the…

Q: A ball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. If the ball…

A: mass of ball (m) = 275 g = 0.275 kg Speed with which the ball hits the floor = 2.90 m/s Speed which…

Q: A ball of mass 1.0 kg falls vertically and hits the ground with a speed of 7 m/s and rebounds with a…

A: Mass of the ball is m = 1.0 kg When it hits the ground its speed is v1 = 7 m/s When it rebounds, its…

Q: 9. A car (mass 900 kg) traveling north at 72kmhr¹ and a truck (mass 40000kg) travel head on and…

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Q: A truck with a mass of 1990 kg and moving with a speed of 17.0 m/s rear-ends a 732 kg car stopped at…

A: Since you have posted a question with multiple subparts , we will solve the first three subparts for…

Q: Two football players are running towards each other the 115 KG linebacker traveling in the negative…

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Q: The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0460…

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Q: Projectiles that strike objects are good examples of inelastic collisions. A 0.1 kg nail driven by a…

A: mass of nail= 0.1 Kg mass of block= 10 kg momentum after collosion = 4.8 kgm/s

Q: Taking the density of air to be 1.29 kg/m^3, what is the magnitude of the linear momentum of a cubic…

A: Given data:  Density of air (ρ) = 1.29 kg/m3 Wind speed (v) = 46 km/h Volume (V) = 1 m3

Q: A baseball pitcher throws a ball at 45 m/s, and the ball is hit by a batter.  The ball leaves the…

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Q: A 1.2 kg ball is thrown out a wall with the speed of 12.5 m/s it bounces back in the opposite…

A: Given: Mass of ball m = 1.2 kg. Speed u = 12.5 m/s. Bounced back speed v = 8.6 m/s.

Q: A fan blows a cart of mass ma distance d. m The same fan blows a heavier cart of mass 2m through the…

A: When the mass is constant, Impulse is given by Impulse = change in momentum = dP =F. dt Here, dP is…

Q: In a physics lab, 0.500-kg cart (Cart A) moving rightward with a speed of 92.8 cm/s collides with a…

A: Given Mass of cart A mA = 0.500 kg Mass of cart B mB = 1.50 kg Initial velocity of the cart A uA =…

Q: Three blocks, each of mass 1.2 kg, sit along a straight line on a frictionless surface.  The first…

A: The mass of blocks, m1 = m2 = m3 = m = 1.2 kg The velocity of the first block, v1 = 2.8 m/s

Q: Compare the scenarios by filling in the blanks with greater, less, or same. A rubber ball hits a…

A: In case of rubber ball- Momentum will be same as, change in momentum is 0, by newton's third law. If…

Q: When you catch a fast-moving baseball, your hand hurts less if you move it in the same direction as…

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Q: ) In a perfectly elastic collision, momentum and kinetic energy of both colliding objects: a.…

A: In elastic collision momentum & kinetic energy both are conserved.  So both momentum &…

Q: A bullet has a mass of .01k kg and is fired from a gun with an unknown speed of v. The bullet…

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Q: An explosion breaks a 35.0-kg object into three parts. The object is initially moving at a velocity…

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Q: A stationary object explodes into several fragments. Which properties of the system are conserved?…

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Q: Cars are equipped with padded dashboards. In collisions, the padded dashboards would be safer than…

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Q: A bullet of mass 0.01 kg is fired horizontally into a block of wood of mass 2 kg. The wood is…

A: It is given that, m=0.01 kgM=2 kgh=0.1 m

Q: A bullet of a mass 5.00g is fired horizontally into a stationary wood block of a mass 0.450kg. After…

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Q: A 5 kg rifle recoils with a speed of 8 m/s when a bullet with a mass of 64 g is fired. The muzzle…

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Q: Determine the momentum of a ... a. 60-kg halfback moving eastward at 9 m/s. b. 1000-kg car moving…

A: a) Momentum, p = mv = 60 kg x 9 m/s = 540 kg.m/s, East b) Momentum, p = mv = 1000 kg x 20 m/s =…

Q: What is the change in velocity of the object as a result of the impulse on the object of previous…

A: Impulse acting on an object is the constant force acting over a period of time , that is , J=F∆t ,…

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Q: A 1080 kg car has a velocity of 28.0 m/s, 30.0° north of east. A second car has a mass of 1630 kg…

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Q: A 12 kg box sliding on a horizontal floor has an initial speed of 4.0 m/s.  The coefficient of…

A: Apply work energy theorem

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Q: A 30.00 kg mass falls from a height of 2.000 m. The magnitude of the momentum of the mass just…

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Q: The roof of a tall building is 25 m above the ground. A rigid ball of mass 0.3 kg falls freely when…

A: Here given the ball is dropped frelly from a height of 25 m. The mass of the ball is 0.3 kg. Again…

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?”