Archana Shukla Solutions for Chapter: Time and Motion, Exercise 3: WORKSHEET

Author:Archana Shukla

Archana Shukla Science Solutions for Exercise - Archana Shukla Solutions for Chapter: Time and Motion, Exercise 3: WORKSHEET

Attempt the free practice questions on Chapter 1: Time and Motion, Exercise 3: WORKSHEET with hints and solutions to strengthen your understanding. WOW! SCIENCE Hands-on Learning in SCIENCE 7 solutions are prepared by Experienced Embibe Experts.

Questions from Archana Shukla Solutions for Chapter: Time and Motion, Exercise 3: WORKSHEET with Hints & Solutions

MEDIUM
7th CBSE
IMPORTANT

We often state that the speed of light in vacuum is about 3×108 ms and the average speed of sound in air is about 330 ms. Why do you think the term 'average' is used to describe the speed of sound in the air but not the speed of light in vacuum?

EASY
7th CBSE
IMPORTANT

A bus takes 15 hours to travel from town X and Y and 12 hours to travel from town Y to Z.

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Calculate the speed of the bus from town 'X' to town 'Y'.

EASY
7th CBSE
IMPORTANT

A bus takes 15 hours to travel from town X to town Y and 12 hours to travel from town Y to Z.

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Is the speed of the bus increasing or decreasing from town 'Y' to 'Z' as compared to the speed from 'X' to 'Y'? Find out.

EASY
7th CBSE
IMPORTANT

A bus takes 15 hours to travel from town X to town Y and 12 hours to travel from town Y to Z.

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What is the average speed of the bus throughout journey?

EASY
7th CBSE
IMPORTANT

Look at the diagram of a simple pendulum. The bob of the pendulum is released at point 'X'. The period of the oscillation is found to be 0.25 s.

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Calculate how long it takes for the bob of the pendulum to swing from X to Y.

EASY
7th CBSE
IMPORTANT

Look at the diagram of a simple pendulum. The bob of the pendulum is released at point 'X'. The period of the oscillation is found to be 0.25 s.

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State one measure you can take to ensure that the measurement of the time period of the pendulum is as accurate as possible.

EASY
7th CBSE
IMPORTANT

Look at the diagram of a simple pendulum. The bob of the pendulum is released at point 'X'. The period of the oscillation is found to be 0.25 s.

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Can you change the time period of the pendulum? How?