A railroad car of mass 3.05 ✕ 104 kg moving at 2.95 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision?  m/s (b) How much kinetic energy is lost in the collision?

A railroad car of mass 2.55 × 104 kg moving at 2.85 m/s collides and couples with two coupled railroad cars, each of the sam mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? 1.75 m/s (b) How much kinetic energy is lost in the collision?

A railroad car of mass 3.20 x 10* kg moving at 3.35 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? Need Help? Read It

A projectile of mass mp 29 g and velocity Vp= 312 i Pi hits a box of mass mg= 8.5 kg moving with a velocity =77 and embeds into it. The box with the projectile continues to slide on a frictionless surface until it reaches a frictionless ramp inclined at an angle 0= 12°. 1. Calculate the velocity of the Projectile-Block system after the collision. V pB %3D 2. Calculate the change of the kinetic energy due to the collision. AK = 3. Is the collision elastic inelastic hmax 4. If the incline is frictionless determine the maximum height h, max the Projectile-Box can reach. h max 5. If the incline had a coefficient of kinetic friction of HK=0.25 which of the following heights would be the most likely outcome (Answer without calculation) 3.296 m 1.514 m 5.077 m

A railroad car of mass 2.56 x 104 kg is moving with a speed of 4.10 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an initial speed of 2.05 m/s. (a) What is the speed of the four cars after the collision? (Round your answer to at least two decimal places.) m/s (b) How much mechanical energy is lost in the collision?

A red cart of mass 270g and a blue cart of mass 690 g are at rest on a level track. They are pushed apart by an expanding spring giving the red cart a speed 1.01 m/s. This is a two part problem. What is the speed of the blue cart after they spring apart? Calculate the total kinetic energy generated in this explosion?

Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord holding them together is burned, after which the block of mass 3M moves to the right with a speed of 55.1 m/s. What is the speed of the block of mass M?