First Choose the correct answer:
1- In the opposite figure, a ball slides from
rest at point (a) through a path
of
negligible
friction, so the speed of the ball at
point (b)
(g = 10 m/s²)
equals............
a) 4 m/s
b) 5 m/s
c) 6 m/s
d) 7.5 m/s