Atoms from two different elements may have the same number of neutrons, but never the same number of protons
Answer:
Power = 47.0 Watt
Explanation:
As we know that friction force is given by
now we have
m = 6.0 kg
now we have
now since we need to find the rate of work done by friction force
so we can say rate of work done is power due to friction force
so it is given as
The given statement "When the net force of an object decreases, the object's acceleration decreases" is true about Newton's second law.
Answer: Option B
<u>Explanation:</u>
Newton’s second law of motion states that the object’s acceleration depends on two variable:
- Directly proportionate to the object’s force existed
- Inversely proportionate to the mass of the objects
The equation can be given as below,
Force = mass × acceleration
Hence, from the above, it is concluded that force is directly proportionate to mass and acceleration of the objects. So, when force increases both mass and acceleration increases. Similarly, if force decreases, both mass and acceleration get decreased. Therefore, the given statement in option B would be correct answer.
The final momentum of the ball is 3.8 kgm/s.
<h3>Change in momentum of the ball</h3>
The impulse received by the ball is equal to change in momentum of the ball.
J = ΔP
where;
- J is the impulse
- ΔP is change in momentum
ΔP = P₂ - P₁
P₂ = ΔP + P₁
<h3>Final momentum of the ball</h3>
The final momentum of the ball is calculated as follows;
P₂ = 8 + (- 0.1 x 42)
P₂ = 8 - 4.2
P₂ = 3.8 kgm/s
Learn more about change in momentum here: brainly.com/question/7538238
Answer:
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