A spherical ball of mass 20kg is stationary at the top of a hill of height 100m. It rolls down a smooth surface to the ground, then climbs up another hill of height 30m and finally rolls done to a horizontal base at a height of 20m above the ground. The velocity attained by the ball is dn a) 10m/s b) 10v30m/s c) 40m/s d) 20m/s
A spherical ball of mass 20kg is stationary at the top of a hill of height 100m. It rolls down a smooth surface to the ground, then climbs up another hill of height 30m and finally rolls done to a horizontal base at a height of 20m above the ground. The velocity attained by the ball is dn a) 10m/s b) 10v30m/s c) 40m/s d) 20m/s
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Transcribed Image Text:A spherical ball of mass 20kg is
stationary at the top of a hill of height
100m. It rolls down a smooth surface to
the ground, then climbs up another hill
of height 30m and finally rolls done to a
horizontal base at a height of 20m
above the ground. The velocity attained
by the ball is
a) 10m/s
b) 10/30m/s
c) 40m/s
d) 20m/s
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