×

#### Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
```
Two cars A and B are moving in same direction with the velocity 30m/s and 20m/s. When car A is at the distance of d behind the car B, the driver of the car applies a brakes producing retardation of 2m/s. There will be no collision when??????

```
3 years ago

## Answers : (1)

Arun
25768 Points
```							For no collision the velocity of A must reduce to that of velocity of B.VA = 30 m/s , VB = 20 m/s , a = - 2 m/s2i.e. the relavitive final velocity of A with respect to B must be 0. Vr = 0The relative initial velocity of A with respect to B is ( VA-VB )The relative acceleration of A with respect to B is (-a - 0 ) = - aUsing the equation : v2= u2+ 2as0 = ( VA-VB )2 + 2 × -a × s's' = ( VA-VB )2 / 2 a= (30-20) 2 / 4=25 m Hence no collision occurs when d is greater than 25 m
```
3 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

## Other Related Questions on General Physics

View all Questions »

### Course Features

• 731 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution

### Course Features

• 18 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions