Question
Physics Question on Kinematics
A ball of mass 0.2 kg is thrown vertically down from a height of 10 m. It collides with the floor and loses 50% of its energy and then rises back to the same height. The value of its initial velocity is
A
14 ms-1
B
196 ms-1
C
20 ms-1
D
Zero
Answer
14 ms-1
Explanation
Solution
The correct answer is (A) : 14 ms-1.