Chemistry, 29.07.2019 15:30 Pbaer4861

How do seatbelts relate to the first law of motion

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Answer from: hamptonjeleesa

in motion with the same speed and in the same direction unless acted upon by an unbalanced force

Answer from: fluffy37

According to Newton's first law, an object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. All objects resist changes in their state of movement. Without an unbalanced force, an object in motion will maintain its state of movement. This is often called the law of (slow or no movement/the force of something moving). Think about/believe for instance the crash of a car with a wall. Upon contact with the wall, an unbalanced force acts upon the car to suddenly slow down it to rest. Any passengers in the car will also be slowed down to rest if they are strapped to the car by seat belts. Being strapped tightly to the car, the passengers share the same state of movement as the car. As the car speeds up, the passengers speed up with it; as the car slows down, the passengers slow down with it; and as the car maintains a constant speed, the passengers maintain a constant speed also.

Answer from: Quest

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

$^{222}_{86} rn+ ^{4}_{2} he$ →

Answer from: Quest

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

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