Explain the Impulse-Momentum Theorem.
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The impulse-theorem states that the change in momentum of an object is equal to the impulse exerted on it
Explanation:
The impulse-theorem states that the change in momentum of an object is equal to the impulse exerted on it.
Mathematically, we have:
- The impulse is defined as the product between the force exerted (F) and the duration of the collision ():
- The change in momentum is equal to the product between the mass of the object (m) and the change in velocity ():
So, the theorem can be written as
This theorem can be proved by using Newton's second law. In fact, we know that
(1)
where a is the acceleration of the object. However, we can re-write the acceleration as the rate of change of velocity:
Therefore, (1) becomes:
And by re-arranging,
Which is exactly the formula of the impulse theorem.
Learn more about impulse and momentum:
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Answer:
The magnitude of Adams' force is 88 N
Explanation:
According to Newton's law ∑ forces in direction of motion is equal to
mass multiplied by the acceleration
There are two forces here the friction force and Adams' force
Adams' force is in direction of motion
Friction force is opposite to direction of motion
→ Friction force = μ R,
where μ is the coefficient of friction and R is the normal reaction force
of the boat
→ R = mg
where m is the mass of the boat and g is the acceleration of gravity
→ m = 47 kg , g = 9.8 m/s²
→ R = mg
Substitute the values in the rule
→ R = 47 × 9.8 = 460.6 N
→ Friction force = μ R
→ μ = 0.13 , R = 460.0 N
Substitute the values in the rule
→ Friction force = 0.13 × 460.0 = 59.878 N
→ ∑ Forces in direction of motion = mass × acceleration
→ F - Friction force = mass × acceleration
→ Friction force = 59.878 N , m = 47 kg , a = 0.6 m/s²
Substitute the values in the rule
→ F - 59.878 = 47 × 0.6
→ F - 59.878 = 28.2
Add 59.878 to both sides
→ F = 88.078 N ≅ 88 N
The magnitude of Adams' force is 88 N
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hope this helps
Q. Why?: it makes sound which causes wave form due to sound vvvvibrattionssszz
Earth
c.
Sun
b.
the moon
d.
Stars
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Answer:
So the correct answer would be the stars do NOT have an influence on the Moon phases.
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A smog, coming from the terms "smoke" and "fog", is an air pollutant while the Ground-level ozone, or also known as tropospheric ozone, is just a part or constituent of all the other air pollutants that make up the smog.
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Nuclear power emits radiation.