×

#### 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
```
A body travels 10m in first three seconds and 15m in the next four seconds. What is the velocity at the end of the 8th second?

```
6 years ago

Nirmal Singh.
44 Points
```							Let's consider initial velocity is u and acceleration is a and 8th sec velocity is v..we will this equation S=ut+0.5at2 as shown below10 = u*3 +0.5 *a*3*3 -----1 25 = u*7 + 0.5*a*7*7  ------2eq 1 => u=(10-4.5*a)/3Putting above value in eq 2 we get25 = ((10-4.5*a)*7)/3 + a*24.5 So, a = 5/42 and u =3.15 Now, v = 3.15 + 5/42(8) So, v=4.1 m/sThanks & Regards,Nirmal SinghAskiitians Faculty
```
6 years ago
Think You Can Provide A Better Answer ?

## Other Related Questions on Discuss with colleagues and IITians

View all Questions »

### Course Features

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

### Course Features

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