Asked/Added Questions From NCERT:


Question 1. Asked on :30 January 2019:04:19:31 PM

 what is pendulumn?

-Added by Jyoti Srivastva Science » Motion And Time

Answer:

Himanshi Verma

 A pendulum is a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position.

-Answered by Himanshi Verma On 02 February 2019:01:32:33 PM


Question 2. Asked on :28 January 2019:04:40:11 PM

Write the difference between uniform and Non uniform motion with explane .

-Added by Nitish kumar Science » Motion And Time

Answer:

Himanshi Verma

 The difference between uniform and non-uniform motion can be drawn clearly on the following grounds: When an object moves along a straight linewith a firm speed, the motion is said to be uniform motion. ... The object in a uniform motion covers same distances in an equal time period.

-Answered by Himanshi Verma On 02 February 2019:01:37:10 PM


Question 3. Asked on :28 January 2019:04:32:24 PM

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes . calculate the total distance covered by the car .

-Added by Nitish kumar Science » Motion And Time

Answer:

Himanshi Verma

  25 km

-Answered by Himanshi Verma On 02 February 2019:01:37:35 PM


Question 4. Asked on :28 January 2019:04:22:43 PM

Salma takes 15 minutes from her house to reach her school on a bicycle . if the bicycle has a speed of m/s, calculate the distance between her house and the school . 

-Added by Nitish kumar Science » Motion And Time

Answer:

Himanshi Verma

 Distance=240km

Time=4h

speed= distance÷time

        =240÷4

        =60km/h

-Answered by Himanshi Verma On 02 February 2019:01:39:45 PM


 

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