Physics Force & Laws of Motion Session: 2021-2022

Physics Force & Laws of Motion Session: 2021-2022.

Newton’s Laws of Motion. First Law of Motion- Whether an object is moving uniformly on a straight path or is at rest, it’s state would not change until and unless an an external force is applied on to it. Hence, we can say that objects oppose a change in their state of motion or rest. This tendency of objects to remain in the state of rest or to keep moving uniformly is called Inertia Second Law of Motion- F= ma Momentum= Mass x Acceleration Third Law of Motion- Every Action has an Equal and opposite reaction..

Examples of the Laws of Motion. Examples of Inertia:- We fall back when a vehicle starts moving in the forward direction because our body is in the rest state and it opposes the motion of the vehicle..

Examples of Laws of Motion-. Example of Inertia- We fall forward when brakes are applied in a car because our body oppose the change of state of motion to rest..

Examples of Laws of Motion-. Example of second law of motion- A cricketer when catches a ball pulls his hands in the backward direction to give some time to decrease the velocity of the ball. As the acceleration of the ball decreases the force exerted on catching the moving ball also decreases. If the cricketer would try to stop a moving ball suddenly he would have to apply larger force..

Examples of Laws of Motion-. Example of second law of motion- A bullet fired at a high velocity can kill a person..

Examples of Laws of Motion-. Example of third law of motion- A ball when hits the ground(action) bounces back with a certain force(reaction).

Examples of Laws of Motion-. Example of third law of motion- when a bullet is fired from a gun, the gun only moves a little backwards (recoils) while the bullet can travel a large distance. This is because of the difference in the mass of the bullet and the gun..

Geographical Features of Sikkim. Situated in the Himalayan mountains, the state of Sikkim is characterised by mountainous terrain. Almost the entire state is hilly, with an elevation ranging from 280 metres (920 ft) in the south at the border with West Bengal to 8,586 metres (28,169 ft) in northern peaks near Nepal and Tibet. Sikkim is a basin surrounded on three sides by precipitous mountain walls. There is little lowland, and the variation in relief is extreme. Within a stretch of roughly 50 miles (80 km), the land rises from an elevation of about 750 feet (225 metres ) in the Tista River valley to nearly 28,200 feet (8,600 metres ) at Kanchenjunga, India’s highest peak and the world’s third highest mountain. The Singalila Range separates Sikkim from Nepal in the west, while the Dongkya Range forms the border with the Tibet Autonomous Region of China to the east. Several passes across this range afford easy access to the Chumbi valley in Tibet and, beyond the valley, to the Tibetan capital of Lhasa. Some two-thirds of Sikkim consists of perpetually snow-covered mountains, dominated by the Kanchenjunga massif. The residents of Sikkim have traditionally viewed the mountain as both a god and the abode of gods. The legendary Abominable Snowman, or yeti, called Neegued in Sikkim, is believed to roam its slopes. Other major peaks—all above 23,000 feet (7,000 metres )—include Tent, Kabru , and Pauhunri . For the most part, the land is unfit for agriculture because of the rocky, precipitous slopes. However, some hill slopes have been converted into terrace farms..

Few popular sports of Sikkim:. Trekking & Hiking River Rafting Mountaineering Mountain Biking Skiing Paragliding Hand Gliding Rock Climbing.

Sikkim’s adventure sports and their dynamics on the basis of Newton's laws:.

Skiing-. We push the Ski poles against the mountain slopes which causes the movement of the skies. Here, the Action is pushing ski poles against the slope, and the Reaction is the movement of the skies on the slope. Hence, it is the ‘Third Law of Motion’..

Rafting. . A bigger raft boat that weighs more would move slower than a lighter boat. The more the mass and weight of the body, the lesser the velocity. Hence, it is ‘the second law of motion’..

Skiing-. The more weight a person has, the more force will be applied for the movement of the body, eventually causing a slower velocity. The more the Mass the lesser the velocity. Hence, it is ‘The second law of Motion’.

Rafting-. The Raft boat will remain stable unless an External Force(Water) will push it to move. Hence, this is the ‘First Law of Motion’.

Skiing-. The Ski won’t move and will remain stationery unless an external force applied by the ski poles will push it to move forward. Hence, this is the ‘First Law of Motion’.

Acknowledgement I would like to thank my Physics teacher- Ms. Sukhpreet Kaur, who gave me the opportunity to work on this project. I would also like to express my gratitude to our worthy principal, Mr. A. David I am also immensely thankful to my Parents for their kind support & guidance..

THANK YOU!. Name: Gauri Dhussa Class: IX-A Roll no.- 13 Session- 2021-2022.