Please wait...
Contact Us
Need assistance? Contact us on below numbers

For Enquiry

10:00 AM to 7:00 PM IST all days.

Business Enquiry (North)

Business Enquiry (South)

Business Enquiry (West & East)



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 number


Mon to Sat - 10 AM to 7 PM

A car starts from rest with an acceleration of 6 m/s2 which decreases to zero linearly with time, in 10 seconds, after which the car continues at a constant speed. Find the time required for the car to travel 400 m from the start.

Asked by Arushi Juyal 12th November 2017, 3:07 PM
Answered by Expert
Acceleration decreases from initial value 6 m/s2 to zero in 10 seconds. Hence acceleration is function of time.
From the definition of acceleration we can write 
From the above relation, we can get the velocity after 10 second is 30 m/s
Distance travelled for the time 10 second is given by 
So initial 200 m travelled in 10 seconds and the next 200 m is travelled with constant speed 30 m/s. 
Hence total time is 10+6.66 = 16.66 s
Answered by Expert 15th November 2017, 1:59 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer 10/10

Your answer has been posted successfully!

Latest Questions

ICSE X Biology
Asked by anthoney_p 19th September 2020, 1:35 AM
ICSE IX Mathematics
Asked by alizaaaliza9879 18th September 2020, 11:54 PM
CBSE XII Science Chemistry
Asked by 01abhishek072005 18th September 2020, 10:08 PM

Chat with us on WhatsApp