The mass A in the figure is 20 kg and the mass B is 28 kg. If released from steady state, after 5 seconds, what is the velocity of mass B?

Q: For how long should a force of 52 N be applied to change the momentum of an object by 9 kg.m/s?

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Q: Bryce, a mouse lover, keeps his four pet mice in a roomy cage, where they spend much of their spare…

A: Givenmasses of 4 mouse:m1 = 0.0125 kgm2 = 0.0209 kgm3  = 0.0149 kgm4 = 0.0213 kgvelocity of four…

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: What is the difference in momentum between a 53-kg athlete running 3.58 m/s and a 880.-kg car…

A: Given data:  Mass of athlete (m1) = 53 kg Velocity of athlete (v1) = 3.58 m/s Mass of car (m2) = 880…

Q: what is the momentum of 100 kg traveling 8m/s?

A: Momentum is defined as product of mass (m) and velocity(v). Momentum is denoted by 'p'. p = m × v…

Q: What is the momentum of a 450 kg object moving at 28.3 m/s?

A: mass=450 kg v= 28.3 m/s We need to find Momentum

Q: Sally, who has a mass of 67 kg, is sledding at the park. She places her 10-kg sled at the top of a…

A: The momentum before collision is,

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: Extra: An electron (mass = 9.1 × 10-31 kg) is accelerated from rest to a speed of 2 x 10% m/s in 1…

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Q: A 2.5 g particle has momentum 5.0×105 kg⋅m/s What is the particle's speed? Express your answer as a…

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Q: Two masses undergo a collision and they stick together. M1 has a mass of 550g and was traveling at…

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Q: Bryce, a mouse lover, keeps his four pet mice in a roomy cage, where they spend much of their spare…

A: Given , masses m1 =0.0103 kgm2 = 0.0133 kgm3 = 0.0195 kgm4 = 0.0185 kg velocities v1x =0.585 m/sv1y…

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: What is the momentum of a 1 kg mass that has fallen from rest for 2.1 seconds?   Assume the…

A: Given:-  Mass (m) =1 kg  time (t) =2.1 sec g=9.8 m/s  Find:-  momentum of the mass in kg m/s

Q: An object with a mass of 6 kg is acted upon by a force of 50 N for 8 s. What is the final velocity…

A: Given: Mass of object m = 6 kg Applied force F = 50 N Time Interval t = 8 s Initial velocity u = 4…

Q: The Sun emits energy in the form of light at a rate of approximately 1026 w. This light originates…

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Q: A 5 kg mass moving with the speed 5 m/s collides with 4 kg mass moving with the speed 8 m/s as shown…

A: Given data *The first mass is m1 = 5 kg *The speed of the first mass is v1 = 5 m/s *The given angle…

Q: A snowball is thrown with a speed of 42.0 km/h, giving it momentum with a magnitude of 2.00 Ns. The…

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Q: A neutron at rest decays (breaks up) to a proton and an electron. Energy is released in the decay…

A: Given: The mass of proton is mp=1836me. The formula to calculate the initial momentum of the…

Q: What is the time during which the force is in contact with the mass?

A: Data provided in the question; Force acting on the mass (F)=10.12 N Change in momentum in the mass…

Q: An astronaut floating at rest in space has run out of fuel in her jetpack. She realizes that…

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Q: a spaceship has the mass M and fuel with the mass aM (a is a constant). if the fuels leaves the…

A: Given:-  mass of spaceship = M mass of spaceship with fuel = aM ; here a is constant means that a is…

Q: Two cars traveling in opposite directions collide and stick together. Before colliding, the first…

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Q: The velocity of a body of mass 15 kg increases from 5 m/s to 10 m/s when a force acts on it for 2 s.…

A: Given : Mass (m) = 15 kg Initial Velocity = 5 m/s Final Velocity = 10 m/s

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A:

Q: What is the momentum of a 145 g baseball traveling at 41 m/s.

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Q: What is the momentum of a 7 kg mass that has fallen from rest for 2.8 seconds?   Assume the…

A: Given data: Mass (m) = 7 kg Initial velocity (Vi) = 0 m/s Time (t) = 2.8 s Acceleration due to…

Q: Mass M1= 20kg and is initially moving to the right at a velocity of V1= 15 m/s. Mass M2 = 5kg and is…

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Q: An object  is traveling in the negitve x-direction with 7.87 kg m/s of momentum and 36.3 J of…

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Q: . An object is moving at 30 m/s and has a momentum of 150 kg*m/s. What is its mass?

A: Given data:  Speed (v) = 30 m/s Momentum (P) = 150 kg.m/s Required: Mass (m)

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.