MCQOPTIONS
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| 1. |
A heavy steel ball of mass greater than 1 kg moving with a speed of 2\[m\,{{\sec }^{-1}}\]collides head on with a stationary ping-pong ball of mass less than 0.1 gm. The collision is elastic. After the collision the ping-pong ball moves approximately with speed [EAMCET 1982] |
| A. | \[2\,m\,{{\sec }^{-1}}\] |
| B. | \[4\,m\,{{\sec }^{-1}}\] |
| C. | \[2\times {{10}^{4}}\,m\,{{\sec }^{-1}}\] |
| D. | \[2\times {{10}^{3}}\,m\,{{\sec }^{-1}}\] |
| Answer» C. \[2\times {{10}^{4}}\,m\,{{\sec }^{-1}}\] | |