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- Mass MAMAM_A = 33 kg and massMB= 30 kg, They have velocities (in m/s) ,v→A = 12 i^ - 20 j^ and v→B = - 20 i^ + 13 j^. Part A Determine the velocity of the center of mass of the system.A rocket is fired in a gravity-free environment in deep space. The rocket has an initial mass of 9500 kg and ejects gas with a velocity of 2450 m/s. The rocket fires for 4.40 s. Calculate the mass (in kg) of the gas that must be ejected in the time given to give the rocket an acceleration of 49.50 m/s2A meter stick has a mass of 0.30 kg and balances at its center. When a small chain is suspended from one end, the balance point moves 12.0 cm toward the end with the chain. Determine the mass of the chain. 0 x Determine a convenient place for the origin of the coordinate system. See if you can write an expression for the center of mass of the two objects in terms of known quantities and the mass of the chain and then solve for the mass of the chain. g Submit Answer
- A 5.00 g bullet is fired horizontally into a 1.20 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.20. The bullet remains embedded in the block, which is observed to slide 0.310 m along the surface before stopping. Part A What was the initial speed of the bullet? Express your answer with the appropriate units. μÅ ? V = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remainingSince a net force is equal to mass times acceleration, and a net force is also equal to the rate of change of momentum, then the rate of change of momentum must equal mass times acceleration. True False Consider a system of 2 objects, A and B. If the rate of change of momentum of the entire system (A and B together) is zero then The total momentum of the system must be zero. The total momentum of the system must be constant. The momentum of A must be constant, and the momentum of B must be constant. The total momentum of the system is conserved. the momentum of A must be zero, and the momentum of B must be zero. You don't have enough information to determine the momentum of A or the momentum of B.A railroad handcar is moving along straight, frictionless tracks with negligible air resistance. In the following cases, the car initially has a total mass (car and contents) of 190 kg and is traveling east with a velocity of magnitude 4.90 m/s. Find the final velocity of the car in each case, assuming that the handcar does not leave the tracks. Part A An object with a mass of 20.0 kg is thrown sideways out of the car with a speed of 2.50 m/s relative to the car's initial velocity. Express your answer with the appropriate units. V = Submit Part B Value V = Request Answer Units Value An object with a mass of 20.0 kg is thrown backward out of the car with a velocity of 4.90 m/s relative to the initial motion of the car. Express your answer with the appropriate units. ? Units east east
- Figure m 0.50 m 1 of 1 1.50 kg 1.10 kg +0.25 m > Part A Find the center of mass of the three-mass system shown in the figure relative to the mass m = 1.47 kg. (Figure 1) Express your answer to two significant figures and include the appropriate units. *CM = Submit ■* μÅ Value Request Answer Units ?This is the next homogeneous figure where each square measures 10 cm by 10 cm. Find the horizontal position of the center of mass in relation to the coordinate system. Give the answer in cm. y