9.
On a 60 cm x 60 cm carrom board, a carrom-coin placed at the centre is hit by the striker. The coin
moves to the front edge, rebounds and strikes to the mid point of the right side limb and stops. The
displacement of the coin is
60
(1) 30√2 cm (2) 30 + 30 √2 cm (3) 30 cm
(4) 60 cm
Answers
Answered by
1
Answer: 30 cm
Explanation:
Attachments:
Answered by
1
The displacement of the coin is 30 cm.
Explanation:
1. When striker hit coin, it collide with front edge of carom.
2. After strike with edge of carom, it rebound by law of reflection.
3. From figure it is clear that coin move in direction from A to B, from law of reflection it move in direction from B to C after rebound from point B.
4. But C is mid point of right side edge of carom. Where distance A to C is half of carom side.
5. Here one important thing is that
Distance cover by coin from A to C = AB +AC
But
Displacement cover by coin from A to C = AC = 30 cm ; because displacement is shortest distance from starting to ending point.
Attachments:
Similar questions