Reference Point and Reference Frame

Q.

For a freely falling body the initial velocity is given by

1. $v=v^2+2gh$

2. $v=g{t}^2$

3. $v=0$

4. None of these

Q.

A body is said to be at rest if it does not change its position with respect to the reference point.

1. True

2. False

Q.

Which of the following statement(s) about motion is/are true?
Statement 1: Motion of an object is relative to the position of another object.
Statement 2: Change in state of motion of an object is the result of an external force.
Statement 3: Motion of an object is change of position of the object with respect to time.

1. Statement 1 only

2. Statement 1, 2 and 3

3. Statement 2 and 3

4. Statement 1 and 2

Q. What is the initial velocity under free fall?

1. It can be any value
2. It is positive
3. It is non-zero

4. It is zero

Q.

Define rest and motion.