Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

dear sir/mam, plz answer the following question....

Asked by 28th February 2008, 12:42 AM
Answered by Expert
Answer:

 

Dear sir/mam, plz answer the following question....
 

a particle moves such that its position vector 'r' at time 't' is given by-

                                   

   r    = i(3t2+2t)+ j(2t2+4t)

determine the magnitude of (i)velocity at t=5sec

                                                (ii)acceleration.

(where i and j are unit vectors along X and Y-axis)

 

The velocity v = (d/dt ) . (i(3t2+2t)+ j(2t2+4t)

which on differentiating, we get,

v = (6t+2)i+(4t+4)j

substituting for t = 5 s

we get,

v=32i+24j  m/s

Do similar thing to find acceleration given by a = (d/dt)v

Regards

Team

TopperLearningSystems

Answered by Expert 8th December 2017, 3:03 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Tags: acceleration
Your answer has been posted successfully!

Chat with us on WhatsApp