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Karolina [17]
2 years ago
8

Describe a real-world example of the law of conservation of momentum.

Physics
1 answer:
mario62 [17]2 years ago
4 0
Imagine a car crash. A car coming at a high speed has a head on collision with a car at rest. When the car makes impact, it will move the other car with it at a slower speed then it was travelling at. In this case, the velocity decreased since the car slowed down, but the mass increased since there are now two cars moving. Momentum was conserved because the change in mass accounts for the loss of velocity.
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An engine takes in 200 J of heat, expels 40 J of heat, and does 160 J of work. What is the efficiency of the engine?
Reil [10]
The answer would be C. 80%
Put 160 over 200 and find the GCF
160/200÷40=4/5=80%

4 0
3 years ago
Kyle has a mass of 54 kg and is jogging at a velocity of 3 m/s. What is Kyle’s kinetic energy?
olga nikolaevna [1]

Answer:243joules

Explanation:

Mass(m)=54kg

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Kinetic energy =(54 x 3^2)/2

Kinetic energy =(54 x 9)/2

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8 0
3 years ago
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3 years ago
What is the weight of 5kgs of apples on Earth?
gregori [183]

Answer:5kgs

Explanation:

3 0
2 years ago
(answer it or get reported) Please answer it w the steps​
Travka [436]

Answer;

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3 0
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