11. Momentum & Impulse

In the context of types of collisions, what happens to the total $KE$ of the system during a perfectly elastic collision between two objects?

Which of the following statements is true about most collisions between objects in everyday life?

In a frontal collision between two objects, which of the following statements is true if the collision is perfectly elastic?

Of all collisions reported, most are a result of which type of collision?

Which of the following statements about types of collisions is correct?

A 3.0-kg block slides along a frictionless tabletop at 8.0 m/s toward a second block (at rest) of mass 4.5 kg. A coil spring, which obeys Hooke’s law and has spring constant k = 850 N/m, is attached to the second block in such a way that it will be compressed when struck by the moving block, Fig. 9–43. Is the collision elastic? Ignore the mass of the spring.

Which type of collisions are most likely to occur at curves on mountains, and why?

Which of the following statements is true about the total kinetic energy of a system following an inelastic collision?

An atomic nucleus of mass m traveling with speed v collides elastically with a target particle of mass 2m (initially at rest) and is scattered at 90°. At what angle does the target particle move after the collision?

(II) An atomic nucleus initially moving at 320 m/s emits an alpha particle in the direction of its velocity, and the remaining nucleus slows to 280 m/s. If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u, what speed does the alpha particle have when it is emitted?

In an elastic collision between two objects, what physical quantities are conserved in this collision?

When two objects with different masses ($m₁$ and $m₂$) collide, how do the magnitudes of the forces they exert on each other during the collision compare?

Which of the following best distinguishes an elastic collision from an inelastic collision?

A Volkswagen Bug and a Volvo truck have a head-on collision. Which statement is true about the forces experienced by each vehicle during the collision?