A machine gun is attached to a railroad flatcar that rolls with negligible friction. If the railroad car has a mass of 6.25 X10^4 kg, how many bullets of mass 25 g would have to be fired at 250 m/s off the back to give the railroad car a forward velocity of 0.5 m/s?
Q: The two masses m₁ = 2kg and m2 are connected by a massless string passing through a massless pulley…
A:
Q: A 88 kg archer is standing on level ice (neglect friction) fires a 101.7 g arrow to the right at 99…
A: Given data: Mass of the archer is, m1= 88 kg Mass of the arrow is, m2= 101.7 g= 0.1017 kg Velocity…
Q: The figure below shows a fisherman in a boat on a lake. The fisherman's mass is 76 kg, and the…
A: Consider the situation in which fisherman of mass M sitting in a boat of mass mb and both fisherman…
Q: Two ice skaters, initially at rest, push against one another. One skater has a mass of 30 kg and…
A: Given: The mass of the first skater is 30 kg. The mass of the second skater is 15 kg. The final…
Q: A rifle with a weight of 25 N fires a 4.0 g bullet with a speed of 290 m/s. (a) Find the recoil…
A: Given Rifle mass mr = 25 N Bullet mass mb = 4.0 g = 0.004 kg Bullet velocity vb…
Q: A railroad tank car rolls on a track at 3.40 m/s toward two identical coupled tank cars, which are…
A: The objective of the question is to find the speed of the three coupled cars after the collision and…
Q: A 390 kg cannon sits on a frozen lake. It fires a 5.5 kg cannonball horizontally with a speed of 305…
A:
Q: A bullet with a mass of 3.20 g moves at a speed of 1.50 ✕ 103 m/s. If a racquetball of mass 86.2 g…
A: Given:Mass of bullet (mb) = 3.2 gmSpeed of bullet (vb) = 1.5×10-3 m/sMass of racquet ball (mr) =…
Q: A railroad flatcar of weight 7840 N can roll without friction along a straight horizontal track.…
A:
Q: A submarine with a mass of 5734526 kg contains a torpedo with a mass of 333 kg. The submarine fires…
A: In given question, system of torpedo and submarine were at rest. No force is acting on the system,…
Q: An impulse of 300 kgᐧm/s (Nᐧs) is produced over a time interval of 5 seconds. What force must be…
A: Solution: Given:J = impulse produced = 300 N.sdt = time interval = 5 sF = force applied to produce…
Q: A bullet with a mass of 2.90 g moves at a speed of 1.50 ✕ 103 m/s. If a racquetball of mass 86.4 g…
A: Momentum of the bullet = Mass of the bullet ✕ Speed of the bullet =2.90 g ✕ 1.50 ✕ 103 m/s = 4.35 ✕…
Q: An empty truck, which has the mass of 15001500 kg, rolls with a speed of 3.43.4 m/s under a loading…
A:
Q: A 2.7-kg cart is rolling along a frictionless, horizontal track towards a 1.8-kg cart that is held…
A: Momentum: The momentum of an object is defined as the product of its mass and velocity.…
Q: A 2.0-kg cart is rolling along a frictionless, horizontal track towards a 1.9-kg cart that is held…
A: (a) Ptotal = 7.21 kg m/s(b) v1(initial) = 3.605 m/sExplanation:(a) Total Momentum of the System, The…
Q: A golf ball of m=0.05 kg reaches a speed of 95 m/s, 0.01 seconds after it was released. What force…
A: Given data: Mass (m) = 0.05 kg Initial velocity (v0) = 0 m/s Final velocity (v) = 95 m/s Time (t) =…
Q: Car A is moving to the right at 0.5m/s. Meanwhile, Car B, which is 6 meters to the right of car A…
A: Velocity of car A = 0.5 ms towards right Velocity of car B = 0.25 ms towards left Distance between…
Q: A rifle with a weight of 25 N fires a 4.5 g bullet with a speed of 300 m/s. (a) Find the recoil…
A: Total momentum of system remains constant. pi=pfbut,pi=0pf=mbvb+mrvr…
Q: A satellite with a mass of 45 kg fires its rocket thrusters which gives an impulse of 1035 kg*m/s.…
A: Given data: The mass of satellite is m=45 kg. The impulse is p=1035 kg·m/s.
Q: What is the velocity of the canoe after the package is thrown? Neglect any resistance force from the…
A:
Q: What is the linear momentum of a 74.0 kg object on the Equator, as measured from the center of…
A: Given that:m=74.0 kgR=6371 km
Q: A century-old platter falls vertically downward. Upon breaking, its fragments fly off parallel to…
A:
Q: A ball of mass 100 g moving with a speed of 2.5 m/s collides with another ball of 100 g moving with…
A: The expression for the total momentum of the system is,
Q: Consider two cars that are on course for a head-on collision. If they have masses m1 = 1,100 kg and…
A: m1 = 1,100 kgm2 = 1,800 kg Let m1 is moving in -ve direction and m2 is moving in +ve…
Q: A rifle with a weight of 40 N fires a 4.5 g bullet with a speed of 290 m/s. (a) Find the recoil…
A: Weight of rifle (Wr)=40 N Mass of bullet (m)=4.5 g=0.0045 kg Speed of bullet (vb)=290 m/s…
Q: If a ball of mass 35 g travelling at 600 m/s hits a block of mass 6 kg at rest and embeds in the…
A: Given Data: The mass of a ball is, mball=35 g The velocity of a ball is, vball=600 m/s The mass of a…
Q: A rifle shoots a 10 gram bullet at a speed of 1000 m/s. If the rifle weighs 5 kg, what is the recoil…
A:
A machine gun is attached to a railroad flatcar that rolls with negligible friction. If the railroad car has a mass of 6.25 X10^4 kg, how many bullets of mass 25 g would have to be fired at 250 m/s off the back to give the railroad car a forward velocity of 0.5 m/s?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A cue ball travelling at 0.785 m/s [270°] strikes a stationary five-ball, causing it to move at 0.601 m/s [230°]. The cue ball and the five-ball each have a mass of 160 g. What will be the velocity of the cue ball immediately after impact? Ignore frictional and rotational effects.A 98.3 kg archer is standing on level ice (neglect friction) fires a 97.3 g arrow to the right at 94.1 m/s. What is the recoil speed of the archer? (report your answer to at least the thousandth's place)Two ice skaters stand together as illustrated in Figure (a) below. They "push off" and travel directly away from each other, the boy with a velocity of v = 0.720 m/s to the left. If the boy weighs 733 N and the girl weighs 486 N, what is the girl's velocity (in m/s) after they push off? (Consider the ice to be frictionless.) ν ?
- The figure below shows a fisherman in a boat on a lake. The fisherman's mass is 77 kg, and the boat's is 132 kg. The fisherman and boat are initially at rest when the fisherman throws a package of mass m = 15 kg horizontally to the right with a speed of v; = 4.6 m/s. What is the velocity of the boat after the package is thrown? Neglect any resistance force from the water. (Give the magnitude in m/s, and select the correct direction from the options given.) magnitude direction ---Select--- m/s m V;A 4,600 kg open train car is rolling on frictionless rails at 21.1 m/s when it starts pouring rain. A while later the car's speed is 19.5 m/s. What mass of water has collected in the car? Provide your answer in appropriate units of meters (m), seconds (s), kilograms (kg), radians (rad) or combinations thereof, such as m/s or m/s^2. Use at least three significant figures in your answer, do not use scientific notation. Using more significant figures will not be considered incorrect; using fewer may lead to errors due to rounding.A 2.4-kg cart is rolling along a frictionless, horizontal track towards a 1.3-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the carts collide, the first cart's velocity is +4.0 m/s, and the second cart's velocity is -2.5 m/s. (a) What is the total momentum of the system of the two carts at this instant? (b) What was the velocity of the first cart when the second cart was still at rest? (a) Number (b) Number i Units Units
- A 4900 kg open train car is rolling on frictionless rails at 18.6 m/s when it starts pouring rain. A few minutes later the car's speed is 15.4 m/s. What mass of water (in kg) has collected in the car?In this problem, an astronaut is landing on the 6.1×1021 kg asteroid traveling at 9830 m/s and detonates a nuclear bomb. The asteroid will break into two pieces of equal mass. One piece will fly off at an angle of 30∘ and speed 9700 m/s. What will be the speed and angle of the second piece?Hello, can you also please include the formula that you used to solve this problem? Thank you!
- A railroad tank car rolls on a track at 2.65 m/s toward two identical coupled tank cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of each is 2.70 × 104 kg. (a) What is the speed (in m/s) of the three coupled cars after the first couples with the other two? (Round your answer to at least two decimal places.) 1.68 m/s (b) Find the (absolute value of the) amount of kinetic energy (in J) converted to other forms during the collision. Enter a number. tal initial kinetic energy of all three cars? Recall that initially, two cars travel at the same speed, while another travels at a different speed. What is the total final kinetic energy of all three cars? Recall that after the collision they all have the same speed. What is the difference between these two energies? Note the question is asking for the absolute value of that difference. JA 4.00 g bullet has a muzzle velocity of 290 m/s when fired by a rifle with a weight of 35.0 N. (a)Determine the recoil speed (in m/s) of the rifle. Answer________m/s (b) If a marksman with a weight of 800 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. Answer________ m/s