When a rifle with a longer barrel is fired, the force of expanding gases acts on the bullet for a longer distance. What effect does this have on the velocity of the emerging bullet? (Do you see why long-range cannons have such long barrels?)

Q: mass 2500 kg and moving at 3 m/s NE collides with a 3000 kg car moving NW at 2.5 m/s. Find their…

A: In perfect inelastic collision both masses combined after collision

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…

Q: In order to catch a ball a boseball player moves his or her hand bockward in the direction of the…

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

Q: Two balls of equal mass and of perfectly elastic material are lying on the floor. One of t the…

A: Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the the…

Q: A rocket has an initial mass m, = 2.8X10°kg of which 2.1X10°kg was fuel. The fuel was burned with a…

A:

Q: A black belt flyweight performs a sudden blow and chops a cement block with his bare hand.   none…

A: Given, A black belt flyweight performs a sudden blow and chops a cement block with his bare hand.…

Q: A pitcher throws a 0.145 kg baseball with a speed of 38.0 m/s. The ball is hit straight back at the…

A: Given mass of ball = 0.145 kg speed of ball before collision = 38.0 m/s spped of ball after…

Q: A bullet of mass 0.5kg is shot into a 100kg block which is initially at rest on a frictionless…

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Q: Cart A is travelling at 1 m/s (south) and Cart B is travelling at 4 m/s (north). After they collide…

A:

Q: rocket has a total mass of 100000 kg and a burnout mass of 10000 kg including engines, shell and…

A:

Q: How much impulse stops a 50-kg carton sliding at 4 m/s when it meets a rough surface?

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Q: Calculate the force exerted on a rocket when the propelling gases are being expelled at a rate of…

A: Given :-            Rate of the propelling gases m∆t = 1300 kg/s             speed v = 4.5×104…

Q: At a speed of 3.00 m/s, a 50.0 kg skater A is moving due north. At a speed of 7.00 m/s, a 50.0 kg…

A: Given:  For skater A m1 = 50 kg  Initial velocity V1i = 3.00 m/s Final velocity V1f = 0    For…

Q: Two swimmers relax close together on air mattresses in a pool. One swimmer’s mass is 48 kg, and the…

A:

Q: A 4 kg block moving right at 6 m/s collides elastically with a 3 kg block moving right at 2 m/s.…

A: (given)             Mass (m1) of a block = 4 kg                   And velocity (v1) = 6 m/s  Mass…

Q: two balls of mass 300g and 90.0 g are supported by strings 100cm long. The larger ball is pulled…

A: Given data: Mass of the ball m1=30.0g=0.030 kg Mass of the ball m2= 90.0g=0.090 kg Length of the…

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

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Q: what accerleration does a baseball of mass of 0.55 experience when hit by a bat if 290 N are exerted…

A:

Q: 5. (II) Calculate the force exerted on a rocket when the propel- ling gases are being expelled at a…

A: Since you are posted more than one question, we will answer the first question. If any specific…

Q: A billiard ball traveling with a velocity of 5.0 m/s hits another ball of the same mass, which is at…

A:

Q: A 2 kg mass moving to the right makes an elastic head-on collision with a 4 kg mass moving to the…

A: Let the direction along right be positive  And the direction along left be negative M1 = 2 kg  M2 =…

Q: A golf ball of mass 0.045 kg is hit off the tee at a speed of 34 m/s . The golf club was in contact…

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Q: In this Newton's cradle, one metal ball is pulled back, causing the other balls to move. Is this an…

A: A Newton's cradle consists of a series of small spherical balls, connected across a rail. When one…

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: A curved incline is used to give a box a certain velocity as it slides down. The box has a mass of…

A:

Q: In terms of impulse and momentum, why are nylon ropes, which stretch considerably under…

A: By stretching itself during the fall the nylon ropes increases the time of impact which reduces the…

Q: On an air track, a glider of mass 300 g traveling at a speed of 2.0 m.s collides with a stationary…

A: Given  Mass 1 = m1 = 300 g  Mass 2= m2= 300 g  Speed 1 = u1 = 2.0 m/s Speed 2 = u2 = 0 m/s  Final…

Q: A ball of mass 200 g is released from rest at a height of 1.70 m above the floor and it rebounds…

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Q: A box a thrown horizontally out of the window with a velocity of 15.5 m/s. If the window is 1.7 m…

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Q: What is condition for conservation of momentum in a system? The total initial momentum must be zero…

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

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Q: A 5-N force is applied to a 3-kg ball to change its velocity from +9 m/s to +3 m/s. The impulse is…

A:

Q: A steel ball of mass 0.600 kg is fastened to a cord that is 80.0 cm long and fixed at the far end.…

A:

Q: A 3.00 lg cart with an initial velocity of +4.00 m/s collides inelastically with a 5.00 kg cart with…

A: The mass of the first cart is, m1=3 kg The initial velocity of the first cart is, u1=4 m/s The mass…

Q: True or False: Both the total Energy and the total Momentum of a closed system are both always…

A: True : Both the total energy and total momentum of a closed system will be conserved.

Q: Two carts are placed next to each other on a low-friction track. The carts are equipped with a…

A:

Q: A billiard ball traveling with a velocity of 5.0 m/s hits another ball of the same mass, which is at…

A: Given: mass of the two balls m1 = m2 = m            the velocity of the ball 1 (u1) = 5.0 m/s…

Q: A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in…

A: Convert speed in m/s speed in m/s =230 x 0.3048                      = 70.104 m/s

Q: Why is it difficult for a firefighter to hold the hose that ejects large amounts of water at a high…

A: Water leaves at very high speed from the hose which is used by the firefighters. But as soon as the…

Q: With a cue, the billiard ball is hit with an average force of 50 N within 10ms. If the mass of the…

A: Write the given values with suitable variables. F=50 NΔt=10 ms=0.01 sm=0.2 kg Here, F denotes the…

Q: What kind of collision takes place between the block and the sphere in the experiment of energy and…

A: Since , in the collision energy and momentum is conserved so it a elastic collision.

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?”