m = 0.350 kg. (c) Is the original energy in the spring or in the cord? (d) Explain your answer to part (c). (e) Is the momentum of the system conserved in the bursting-apart process? Explain how that is possible considering (f) there are large forces acting and (g) there is no motion before- hand and plenty of motion afterward? 5. Two blocks of masses m alu QIC are placed on a frictionless, hor- V izontal surface. A light spring is attached to the more mas- sive block, and the blocks are pushed together with the spring between them (Fig. P9.5). A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of 2.00 m/s. (a) What is the velocity of the block of mass m? (b) Find the system's original elastic potential energy, taking 3m m Before 2.00 m/s 3m After Figure P9.5

A 5.00-g bullet moving with an initial speed of vi = 390 m/s is fired into and passes through a 1.00-kg block as shown in the figure below. The block, initially at rest on a frictionless, horizontal surface, is connected to a spring with force constant 860 N/m. The block moves d = 5.60 cm to the right after impact before being brought to rest by the spring a) Find the speed at which the bullet emerges from the block.=----m/s b) Find the amount of initial kinetic energy of the bullet that is converted into internal energy in bullet–block system during the collision. =-------J

Asap plzz

Doing some physics homework and am kind of stumped here!

Your workouts are helping, and now, you can finally do one pull-up.In the pull-up, you lift your body's Center-of-Mass (C.M.) by 0.5 m in2 seconds. If your weight is W = 666 N, how much power did youexpend in the process?

Need this ASAP. ANSWER SUBPARTS D E

A block of mass m 2.00 kg slides along a horizontal table with speed vo 9.50 m/s. At x = 0 it hits a spring with spring constant k95.00 N/m and it also begins to experience a friction force. The coefficient of friction is given by u 0.100. How far has the spring compressed by the time the block first momentarily comes to rest? wwwww.wl Number 9.50 m/s m Ar ?

1. Blocks A and B move along frictionless vertical bars and are connected with a rope that wraps around the frictionless pulley at P. Block A has a mass of 2kg and block B has a mass of 10 kg. The spring shown is unstretched when block B is in contact with the ground. The system is released from rest in the position shown. Determine the speeds of A and B immediately before B hits the ground. Neglect the mass of the rope and the pulley. The linear spring has a stiffness of 40 N/m and is attached to the ground and to block B. Treat bloeks as particl es with negligible dimensions d = 2.5 m D P 1 = 4m k I h = 2 m A

Please explain the solution