A thick wood block of mass 2.2 kg stands at rest on a horizontal and frictionless table. Sally fires a bullet of mass 4.5 g. The bullet reaches a speed of 380 m/s and hits the block. After the collision the bullet is stuck inside the block. What is the speed of the center of mass of the bullet-block system before the collision in meters per second?  What is the speed of the wood block after the collision in meters per second?

A 41.0 g marble moving at 2.30 m/s strikes a 29.0 g marble at rest. Note that the collision is elastic and that it is a "head-on" collision so all motion is along a line. What is the speed of each marble immediately after the collision?

A 1 500 kg car travelling at 25 m/s collides with a 2 500 kg van stopped at a traffic light. As a result of the collision, the two vehicles become entangled. With what initial speed will the entangled mass move off, and is the collision elastic or in elastic? (K:1) SPEED TYPE OF COLLISION A. 9.4 m/s Flastic B. 9.4 m/s Inclastic C. 15 m/s Elastic D. 15 m/s Inclastic Select one: O C D QA B O

The figure below shows a bullet of mass 230g traveling horizontally towards the east with a speed of 415m/s, which strikes a block of mass 7.5kg that is initially at rest on a frictionless table. After striking the block, the bullet is embedded in the block and they begin to move as one unit.  A. What is the magnitude (in m/s) and direction of the velocity of the block/bullet unit immediately after the impact? B. What is the magnitude (in N * s) and direction of the of the impulse of the block on the bullet?  C. What is the magnitude ( in N *s) and direction of the impulse of the bullet and the block?

A 1.30 kg mass (mass 1) moves to the right with a speed of 2.50 m/s and collides with a stationary 1.30 kg mass (mass 2). Assuming the collision is elastic, what are the velocities of the first and second masses following the collision?  A. mass 1: 1.25 m/s to the right, mass 2: 1.25 m/s to the right mass  B. mass 1: 0.00 m/s, mass 2: 2.50 m/s to the right   C. mass 1: 1.25 m/s to the left, mass 2: 1.25 m/s to the right  D. mass 1: 2.00 m/s to the right, mass 2: 0.50 m/s to the right

An air hockey puck is moving with a velocity of 2 in/sec towards a second puck that is at rest. After the two pucks collide, the first puck reverses direction and moves at 0.7 in/sec. If the pucks have the same mass, what is the velocity of the second puck after the collision in m/s? Assume the air hockey table has no friction and that all of the motion is in one dimension.

What is the final speed of object two in m/s?