Home
Class 6
PHYSICS
Find the acceleration of the car, if it ...

Find the acceleration of the car, if it changes its velocity from `20 m s^(-1)` to `30 ms^(-1)` in 5 seconds.

Text Solution

Verified by Experts

The correct Answer is:
`2 m s^(-2)`
`a=(v-u)/(t)`
`a=(30-20)/(5)=2`
`a=2 m s^(-2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MEASUREMENTS AND MOTION

    PEARSON IIT JEE FOUNDATION|Exercise concept|5 Videos

  • MEASUREMENTS AND MOTION

    PEARSON IIT JEE FOUNDATION|Exercise Test 1|13 Videos

  • MEASUREMENTS AND MOTION

    PEARSON IIT JEE FOUNDATION|Exercise Very Short Answer Questions|45 Videos

  • LIGHT

    PEARSON IIT JEE FOUNDATION|Exercise ASSESSMENT TEST (CROSS WORD )|11 Videos

  • MOVEMENT - AN AMAZING ACTIVITY

    PEARSON IIT JEE FOUNDATION|Exercise CROSSWORD|1 Videos

Similar Questions

Explore conceptually related problems

Find the acceleration of the car, if it changes its velocity from 20 ms^(-1) to 30 ms^(-1) in 5 seconds.

A particle moves in a straight line with a constant acceleration.It changes its velocity from 10m/s to 20m/s while covering a distance of 135m in t second.What is the value of t?

Knowledge Check

  • What force should be applied on a body of mass 500 kg to change its velocity from 4 ms^(1) to 6 ms^(-1) in one second ?

    A
    250 N
    B
    500 N
    C
    1000 N
    D
    2000 N

  • A particle moves in a straight line with a constant acceleration. It changes its velocity from 10 ms^-1 to 20 ms^-1 while passing through a distance 135 m in t seconds. The value of t is.

    A
    10
    B
    1.8
    C
    12
    D
    9

  • What force will change the velocity of a body of mass 1 kg from 20 ms^(-1) to 30 ms^(-1) in two seconds?

    A
    1N
    B
    `5N`
    C
    `10 N`
    D
    `25 N`

    • Similar Questions

    Explore conceptually related problems

    Certain force acting on a 20 kg mass changes its velocity from 5ms ^-1 to 2ms^-1 . Calculate the work done by the force.

    Question stimulus:- A constant force acting on a body of mass 5 kg changes its speed from 2 ms^(-1) to 4 ms^(-1) in 20 s, without changing its direction of motion. The magnitude of the force is

    Find the acceleration (in m//s^2 ) of a body which accelerates from 25 m/s to 30 m/s in 10 seconds.

    A car drive accelerates the car to increase its speed from 30 km h^(-1) to 60 km h^(-1) in 5 min. Arrage the following steps a sequence to obtain the acceleration of the car. (A) Use the formula , rate of change of velocity = (" Total change in veclocity")/("Total time required for change") (B) Obtain the final velocity (v) , of the car. (C) Find the time taken to increase the speed of the car from u to v let it be 't' (D) find the initial velocity (u) of the car. (E) Substitute the values in the formula and calulate the acceleration of the car.

    The speed of a car changes from 0 to 5 ms^(-1) in the first phase and from 5 ms^(-1) to 10 ms^(-1) in the second phase and from 10 ms^(-1) to 15 ms^(-1) during the third phase. In which phase the increase in kinetic energy is more ?

    Home
    Profile