A spherical ball of mass 20 kg is stationary at the top of a hill of height 100 m. It…
Physics · JEE Main · NTA Exams — Rotational Motion
A spherical ball of mass 20 kg is stationary at the top of a hill of height 100 m. It goes down a smooth surface to the ground, then climbs up another hill of height 30 m and finally goes down to a horizontal base at a height of 20 m above the ground. The velocity attained by the ball is :
- 40 m/s
- 20 m/s
- 10 m/s
- \(10 \sqrt{30}\) m/s
Answer
(A) 40 m/s
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