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運動と時間 7年生第13章科学

Mișcare și Timp Capitolul 13 Clasa 7 Știință

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Mișcare și Timp Capitolul 13 Clasa 7 Știință
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現役学生
英語
99言語の字幕
37分
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何を学ぶか

Întrebarea 1. Într-un concurs atletic școlar, un băiat a fugit la o viteză de 2m/s și a terminat pe primul loc într-o cursă de 200m. Câtă distanță a parcurs el pe secundă?
Întrebarea 3. Un pendul simplu ia 32s pentru a finaliza 20 de oscilații. Care este perioada de timp a pendulului?
Întrebarea 4. Distanța dintre două stații este de 240 km. Un tren ia 4 ore pentru a parcurge această distanță. Calculați viteza trenului.
Întrebarea 5. Unitatea de bază a vitezei este: (i) km/min (ii) m/min (iii) km/h (iv) m/s

コース内容

5 セクション • 5 講義 • 00:37:54 全長

Introduction

04:21
Q1. In a school athletic meet, a boy ran at a speed of 2m/s and stood first in a 200m race. How much distance is covered by him per second? Q2. Rahul and Rijul are going on the excursion. They both have to go to the same place and cover a certain distance but in different cars. If Rahul covers a certain distance in one hour and Rijul covers the same distance in two hours. Who travels with a higher speed? Q.3. A simple pendulum takes 32s to complete 20 oscillations. What is the time period of the pendulum? Q. 4. The distance between the two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train. Q. 5 The basic unit of speed is: (i) km/min (ii) m/min (iii) km/h (iv) m/s Q6. Define the following terms: A) Distance B) Time: C) Speed: D) Uniform Motion: E) Average Speed Q. 7. Change 20 m/s to km/h Q.8. Change 54km/h to m/s Q.9. An electric train is moving at a speed of 30m/s. How much distance will it travel in the 30s? Q.10. A bus takes 30 minutes to travel a distance of 25 km. Calculate the speed of the bus in km/h? Q.11. A train is traveling at a speed of 110km/h. How long will it take to complete a journey of 605 km, without any stoppage in between? Q.12. The time taken for 20 oscillations is 40 seconds. Calculate the time period of a simple pendulum. Q.13. Plot the graph from the following data: Also answer the following question: What is the type of motion shown in the graph? Q.14 Vani takes 2h to reach Jalandhar from Amritsar by car. If speed of her car is 40km/h., calculate the distance between Jalandhar and Amritsar. Q.15. You are going to a hill station by car. You are very excited to reach there early and want to cover more distance quickly. You are asking your dad about the distance covered so far again and again. Your father told you about a device in a car which can measure the distance covered by car. Can you name that device? Q.16. Show the shape of the distance-time graph for the motion in the following cases: (a) A car moving with a constant speed (b) A car parked on a side road Q.17. Which of the following relations is correct? (a) Speed = Distance x Time (b) Speed = Distance/Time (c) Speed= Time/Distance (d) Speed=1/Distance x Time
  1. Which of the following distance-time graphs shows a truck moving with speed which is not constant.

Q1. In a school athletic meet, a boy ran at a speed 2m/s and stood first in 200m

08:46

Q1. In a school athletic meet, a boy ran at a speed of 2m/s and stood first in a 200m race. How much distance is covered by him per second?

Q2. Rahul and Rijul are going on the excursion. They both have to go to the same place and cover a certain distance but in different cars. If Rahul covers a certain distance in one hour and Rijul covers the same distance in two hours. Who travels with a higher speed?

Q.3. A simple pendulum takes 32s to complete 20 oscillations. What is the time period of the pendulum?

Q. 4. The distance between the two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train.

Q. 5 The basic unit of speed is:(i) km/min (ii) m/min(iii) km/h (iv) m/s

Q6. Define the following terms:-A) Distance B) Time : C) Speed:

08:42

Q6. Define the following terms:-

A) Distance

B) Time :

C) Speed:

D) Uniform Motion:

E) Average Speed

Q. 7. Change 20 m/s to km/h

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このコースについて

Întrebarea 1. Într-un concurs atletic școlar, un băiat a fugit la o viteză de 2m/s și a terminat pe primul loc într-o cursă de 200m. Câtă distanță a parcurs el pe secundă?

Întrebarea 2. Rahul și Rijul merg într-o excursie. Ambii trebuie să ajungă în același loc și să parcurgă o anumită distanță, dar în mașini diferite. Dacă Rahul parcurge o anumită distanță într-o oră, iar Rijul parcurge aceeași distanță în două ore. Cine călătorește cu o viteză mai mare?

Întrebarea 3. Un pendul simplu ia 32s pentru a finaliza 20 de oscilații. Care este perioada de timp a pendulului?

Întrebarea 4. Distanța dintre cele două stații este de 240 km. Un tren ia 4 ore pentru a parcurge această distanță. Calculați viteza trenului.

Întrebarea 5. Unitatea de bază a vitezei este:

(i) km/min (ii) m/min

(iii) km/h (iv) m/s

Întrebarea 6. Definiți următorii termeni:

A) Distanță

B) Timp:

C) Viteză:

D) Mișcare Uniformă:

E) Viteză Medie

Întrebarea 7. Schimbați 20 m/s în km/h

Întrebarea 8. Schimbați 54km/h în m/s

Întrebarea 9. Un tren electric se mișcă cu o viteză de 30m/s. Câtă distanță va parcurge în 30s?

Întrebarea 10. Un autobuz ia 30 de minute pentru a parcurge o distanță de 25 km. Calculați viteza autobuzului în km/h.

Întrebarea 11. Un tren călătorește la o viteză de 110km/h. Cât timp va dura să finalizeze un drum de 605 km, fără nicio oprire între ele?

Întrebarea 12. Timpul necesar pentru 20 de oscilații este de 40 de secunde. Calculați perioada de timp a unui pendul simplu.

Întrebarea 13. Tratează graficul din următoarele date:

De asemenea, răspunde la următoarea întrebare:

Ce tip de mișcare este arătat în grafic?

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This channel is purely education based. Our aim is to ensure that the students are able to understand each and every question in an easy way. We take pride in providing quality educational services to the students of Class VII to Class XI Science NCERT, English, Computer solutions, Mathematics, Business Studies & Economics. Our goal is to help the leaders of tomorrow to learn to succeed today....

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