Assertion (A) : The displacement of a body can be zero even if the distance travelled by it is not zero.

Reason (R) : Displacement is the shortest distance from the initial to the final position of body.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : For a given time interval, average velocity and average speed can have different values.

Reason (R) : Speed is a scalar quantity whereas velocity is a vector quantity.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : The velocity-time graph of a body in motion can be a straight line parallel to the time axis.

Reason (R) : This is because the motion of body is with uniform velocity.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : The acceleration-time graph of а body is a straight line parallel to time axis.

Reason (R) : This depicts the motion of freely falling body under gravity.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false