A ball with original momentum +7.0 kg/m/s hits a wall and bounces straight back without losing any kinetic energy. The change in momentum of the ball is:
a. 0.
b. 14 kg/m/s.
c. 7.0 kg/m/s.
d. –14 kg/m/s.
e. –7.0 kg/m/s.
d
Physics & Space Science
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