Collision Example II
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Q.
A railway engine of mass tons moving at a speed of collides with a wagon at rest. After collision both hava common velocity of . Find the mass of the wagon. ()
Q.
A car of mass 1000 kg travels at 12 m/s on a horizontal and the resistance to motion is 500 N. Find (a) its momentum.
Q. A small ball is suspended from a fixed point O by means of an ideal string of length l. The ball is first taken aside such that the string becomes horizontal and then released from rest. At the bottom, it collides with a fixed obstacle. The coefficient of restitution is e. The maximum angular deflection of the string after nth collision is
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1605075/original_9Q.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1605075/original_9Q.png)
- sin−1(1−e2n)
- cos−1(1−e2n)
- sin−1(e2n)
- cos−1(e2n)
Q.
A car of mass 1050 kg is moving towards east with a speed of 15 . A truck is moving towards west. The mass of the truck is 6320 kg. both the vehicle collide head-on and remain locked together after the collision. Based on above information, answer the following question.
The speed of truck before the collision so that the vehicles comes to rest after collision is