The document Notes | EduRev is a part of the NEET Course Physics 28 Years Past year papers for NEET/AIPMT Class 11.

All you need of NEET at this link: NEET

**Q 1. Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time t _{1}. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time t_{2}. The time taken by her to walk up on the moving escalator will be [2017]** B

A:

B:

C: t_{1} â€“ t_{2}

D:

Ans:

Solution :

As we learnt in

Case of Relative velocity -

When A & B are moving along with straight line in opposite direction.

Relative velocity of A with respect to B is.

A: Velocity is perpendicular to r and acceleration is directed away from the origin.

B: Velocity and acceleration both are perpendicular to r

C: Velocity is acceleration both are parallel to r

D: Velocity is perpendicular to r and acceleration is directed towards the origin. [2016]

Ans:

A: A/2 + B/3

B: 3A/2 + B

C: 3A + 7B

D: 3A/2 + 7B/3

Ans:

Solution:

A: -2nÎ²

B: -2nÎ²

C: -2nÎ²

D: -2nÎ²

Ans:

Offer running on EduRev: __Apply code STAYHOME200__ to get INR 200 off on our premium plan EduRev Infinity!

14 docs|25 tests

### Test: Motion In A Straight Line 1 - From Past 28 Years Questions

- Test | 16 ques | 30 min
### Test: Motion In A Straight Line 2 - From Past 28 Years Questions

- Test | 30 ques | 60 min