Home
Class 12
PHYSICS
A car accelerates from rest at constant ...

A car accelerates from rest at constant rate of `2m/s^2` for some time. Then it retards at constant rate of `4m/s^2` and comes to rest . If the total time for which it remains in motion is 3 seconds, what is the distance travelled ?

A

2m

B

3m

C

4m

D

6m

Text Solution

Verified by Experts

The correct Answer is:
C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MECHANICAL PROPERTIES OF SOLIDS

    MBD PUBLICATION|Exercise QUESTION BANK |224 Videos
  • MOTION OF SYSTEM OF PARTICLES AND RIGID BODY

    MBD PUBLICATION|Exercise QUESTION BANK|234 Videos

Similar Questions

Explore conceptually related problems

If the rate constant of a first order-reaction is 6.93 xx 10^(-4) per second, what is its half-life period?

A bus starts from rest with a constant acceleration of 5m/s^2 . At the same time , a car travelling with a constant velocity of 50m/s overtakes and passes the bus ,find (i)at what distance will the bus overtake the car ? (ii)How fast will the bus overtakes the car after distance S metres.

Knowledge Check

  • An object accelerates from rest to a velocity 27.5m/s in 10 secs, then find the distance covered by next 10s.

    A
    550m
    B
    137.5m
    C
    412.5m
    D
    275m
  • A car starts from rest and moves with constant acceleration. The ratio of the distance covered in the nth second to that covered in n seconds is

    A
    `2/n^2 - 1/n`
    B
    `2/n^2 -+ 1/n`
    C
    `2/n - 1/n^2`
    D
    `2/n + 1/n^2`
  • Similar Questions

    Explore conceptually related problems

    A truck starts from the speed from rest with an acceleration 1.5m/s^2 while a car 150m behind starts from rest with an acceleration of 2m/s^2 . How long will it take before both the truck and car side by side and how much distance is travelled by each ?

    A body starting from rest accelerates uniformly and attains a velocity of 20m/s in 30 seconds. Find its acceleration and the distance it covers in that time

    The initial velocity of a car is 10m/s . It accelerates uniformly at 2m/s_2 for 20s and thereafter retards uniformly at 4m/s_2 . Find the total distance covered by the car before it comes to rest . For how much time the car is in motion ?

    The fuel in a rocket is burnt at the rate of 50 kg/s and the gases are ejected at the rate of 6 xx 10^4m/s with respect to the rocket, What is the thrust developed?

    S.I. unit of Rydberg's constant is m^-2 .

    A car is moving with a speed of 30 m/s on a circular path of radius 500m. It's speed is increasing at the rate of 2 m/s^2 . Find acceleration of the car.