If two objects collide and one is initially at rest, (a) is it possiblefor both to be at rest after the collision? (b) Is it possiblefor only one to be at rest after the collision? Explain.

What types of collisions conserve total momentum of the system? O Inelastic Collisions O Both elastic and inelastic collisions Elastic Collisions No collisions conserve total momentum What types of collisions conserve total kinetic energy of the system? O Inelastic Collisions O Both elastic and inelastic collisions No collisions conserve total kinetic energy Elastic Collisions

Block 1 of mass 200 kg slides over a frictionless surface with a velocity of 0.25 cm/s and strikes block 2 of mass 100 kg sliding to the left at 0.75 cm/s. What is the final velocit y of each block if the collision is A) Perfectly elastic? B) Perfectly inelastic? C) If there is an external force of 4000 kg*cm/s^2 to the right for 0.008 s during the perfectly inelastic

Two masses, m, and m, move on the xy plane towards each other as shown in the figure. The first mass m,=1.1kg is moving with a speed v,=6.7m/s while m,-4.3kg is moving with a speed v,=10.6m/s . As a result of the collision m, comes to rest. What is the final speed of m,? Express your answer using two decimal places. Before the collision

An 0.250kg object, going 2m/s, slides across a frictionless surface into another object (0.400kg) at rest. The 0.250kg object bounces backwards at a 135o angle from the other object going at 1.5o m/s. What is the magnitude and direction of the 0.400kg object after the collision?

A 1.0 kg mass with a speed of 4.5 m/s strikes a 2.0 kg mass at rest. For a completely inelastic collision, find: (a) The speed of the masses after the collision. (b) The change in kinetic energy. (c) The momentum after the collision.

Can any real collision ever be truly perfectly elastic? Why or why not? (You should think about this in two ways: first consider what effects of the environment surrounding the collision might have on energy and momentum conservation; second, consider the objects themselves – how must an object react to a collision in order to be considered "perfect"?).

In inelastic collision: a) Both linear momentum and energy are conserved.  b)  Linear momentum is conserved, but energy is not conserved.   c)  Linear momentum is not conserved, but energy is conserved.  d)  Both linear momentum and energy are not conserved.

A 120 kg man is standing in the middle of a skating rink holding a 2kg ball. He suddenly throws the ball eastward at 5 m/s. What is the magnitude of his momentum afterward? Assuming frictonless between his skateboots and the ice.

Particles are moving speeds of v₁ = 5.2 m/s. After the collision a+ and V₂=0 and m₂ = 2m₁. is observed to be moving mass mi f 90° relative to its direction Prior to e collision is elastic. an angle the Collis Eine a Suitable coordinate system and determ may final velocities (including direction) of each Partille, be useful to remember that cos(20)= Cos²-si- 9150