The elastic ball bounces down a flight of rigid stairs. Coefficient of restitution is e = 0.85 and the initial velocity of the ball is 6 Neglecting friction between sec the ball and stairs, which of the following most nearly gives the value of the height h of the steps if all the trajectories between successive steps are identical?

Elements Of Electromagnetics
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The elastic ball bounces down a flight of rigid stairs. V=6 m/s
Coefficient of restitution is e = 0.85 and the initial
velocity of the ball is 6 . Neglecting friction between
70
the ball and stairs, which of the following most nearly
gives the value of the height h of the steps if all the
trajectories between successive steps are identical?
a) h = 1.17 m
d) h = 0.87 m
b) h = 0.35 m
c) h = 1.39 m
e) h = 0.68 m
Transcribed Image Text:The elastic ball bounces down a flight of rigid stairs. V=6 m/s Coefficient of restitution is e = 0.85 and the initial velocity of the ball is 6 . Neglecting friction between 70 the ball and stairs, which of the following most nearly gives the value of the height h of the steps if all the trajectories between successive steps are identical? a) h = 1.17 m d) h = 0.87 m b) h = 0.35 m c) h = 1.39 m e) h = 0.68 m
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