A ball with original momentum +2.0 kgm/s hits a wall and bounces ...

[ts19998]

A ball with original momentum +2.0 kgm/s hits a wall and bounces straight back without losing any kinetic energy. The change in momentum of the ball is:
 a. 0.
  c. 4.0 kgm/s.
  b. -4.0 kgm/s.
  d. -8.0 kgm/s.

Question 2

Three equal positive charges are placed on the x-axis, one at the origin, one at x = 2 m, and the third at x = 4 m. Of the following points, which has the greatest magnitude electric field?
 a. x = 1 m
  b. x = 3 m
  c. x = 5 m
  d. The electric field has the same magnitude at all three positions.

[shaquita]

Answer to Question 1

B

Answer to Question 2

C

[ts19998]

Excellent

[Hdosisshsbshs]

Gracias!