Take an inclined plane, take two halves of the chart paper. Spread some pebbles on one of them and sand on the other (a thin layer). Gently release the ball on the inclined plane. Observe the ball rolling down over the spread of pebbles and note the distance moved by the ball. Repeat the experiment with the sand spread on chart paper and then an a plain paper. Enter your observation in the table.
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As we know rough surface has more friction so pebble surface will be rough than sand one. So in this case ball will cover less distance on pebble surface than snad surface. On plain paper ball will cover maximum distance as it has least friction.
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