A marble rolls back and forth along the path shown. When it is at ...

[littleanan]

A marble rolls back and forth along the path shown. When it is at position B, its kinetic energy is
 
  1) maximum,
  2) minimum,
  3) midway between maximum and minimum,
 
  its momentum is
  4) maximum,
  5) minimum,
  6) midway between maximum and minimum,
 
  and its potential energy is
  7) maximum.
  8) minimum.
  9) midway between maximum and minimum.

Question 2

When the momentum of a punch is stopped by the fighter's jaw while he moves into the oncoming punch, the result is
 
  1) an increase in the relative velocity of the blow,
  2) a decrease in the time of contact of the blow,
 
  which thereby most greatly increases the
  3) force.
  4) impulse.
  5) momentum.
  6) inertia.
  7) energy.

[Animal_Goddess]

Answer to Question 1

Answer: 1, 4, 8

Answer to Question 2

Answer: 2, 3

[littleanan]

Great answer, keep it coming

[blakcmamba]

Wow, this really help