Q.1. The following statement is not correct regarding the translation of a body

1. In translation every line in the body remains parallel to its original position at all time.
2. In translation, there is no rotation of any line in the body.
3. The velocity of translating body can change in magnitude but not in direction.
4. In translation, a point on the body can move on a curve.

Q.2. The following statement is incorrect for a rigid body :

1. All lines in its plane of motion have the same angular displacement.
2. All lines in its plane of motion have the same angular velocity.
3. All lines in its plane of motion have the same angular acceleration.
4. All points in its plane of motion have the same linear velocity.

Q.3. The angular velocity of a body is 50 rad/sec. The angular acceleration of the body is proportional to