Question

With reference to the content given in NCERT Class 9th , find out what are the three laws of

Motion ? Give examples showing applicability of the laws in everyday life situations. (think in reference to walking, playing, driving etc). ​

Answer 1

:In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

EXAMPLES: when you throw a coin upwards while your are moving in a bus the coin falls behind this shows the coin tends to be in its original position ,another example when you move in a bus along a circular curvilinear road you experience that you are like falling from cross from the bus ,A swimmer pushes the water backward by his/her hands and in return the water pushes the swimmer forwards, thus enabling him to go forward during swimming.

Answer 2

Answer:

:In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

EXAMPLES: when you throw a coin upwards while your are moving in a bus the coin falls behind this shows the coin tends to be in its original position ,another example when you move in a bus along a circular curvilinear road you experience that you are like falling from cross from the bus,A swimmer pushes the water backward by his/her hands and in return the water pushes the swimmer forwards, thus enabling him to go forward during swimming.

Explanation:

In hindi

: पहले नियम में, कोई वस्तु अपनी गति को तब तक नहीं बदलेगी जब तक कि उस पर कोई बल कार्य न करे। दूसरे नियम में, किसी वस्तु पर लगने वाला बल उसके त्वरण के द्रव्यमान गुणा के बराबर होता है। तीसरे नियम में, जब दो वस्तुएं परस्पर क्रिया करती हैं, तो वे समान परिमाण और विपरीत दिशा में एक-दूसरे पर बल लगाती हैं।

उदाहरण: जब आप एक बस में चलते समय एक सिक्का ऊपर की ओर फेंकते हैं तो सिक्का इसके पीछे गिर जाता है यह दर्शाता है कि सिक्का अपनी मूल स्थिति में है, एक और उदाहरण जब आप एक गोलाकार घुमावदार सड़क के साथ बस में चलते हैं तो आप अनुभव करते हैं कि आप जैसे हैं बस से क्रॉस से गिरने पर, एक तैराक अपने हाथों से पानी को पीछे की ओर धकेलता है और बदले में पानी तैराक को आगे की ओर धकेलता है, जिससे वह तैराकी के दौरान आगे बढ़ने में सक्षम हो जाता है