A cylinder steel shaft of radius 2cm and 50 cm long is turned down on a lathe to one half its radius for distance of 20cm from one end. Find the distance of its centre of gravity from the thicker end.

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

Which of the following is an example of motion in two dimensions?

Energy flows from the producer level to the level. is called