A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2 m/s to 4 m/s? A) The initial momentum is 6 kg*m/s, and the final momentum is 3 kg*m/s
B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s
C) The initial momentum is 12 kg*m/s, and the final momentum is 3 kg*m/s
D) The inital momentum is 6 kg*m/s, and the final momentum is 12 kg*m/s

Answers

Answer 1
Answer:

Answer:

B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s

Explanation:

The momentum of an object is given by the product between its mass (m) and its velocity (v):

p=mv

Let's apply this formula to calculate the initial momentum and final momentum of the ball:

- initial momentum:

p_i = m v_i = (6 kg)(2 m/s)=12 kg m/s

- Final momentum:

p_f = m v_f = (6 kg)(4 m/s)=24 kg m/s

So, the correct answer is

B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s

Answer 2
Answer: Momentum = (mass) x (speed)

Choice-B is the correct one.

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Answers

Unknowns, represented by variables, are effective for identifying the value. They stand for a certain amount, and solving for them would uncover values, like force etc. 

Explain which has a greater inertia - a speeding car or jet plane sitting on a runway?

Answers

Explanation:

Inertia is related to only mass, not speed.

Since a jet plane has more mass than a car, it has more inertia.

Which of the following is a true statement? A) It's easier to lift a heavy weight straight up than to slide it up a ramp. B) When you use a lot of effort, a load becomes lighter. C) When you use a minimum amount of effort, a load becomes heavier. D) When you increase the distance over which effort is expended, you don't have to work as hard.

Answers

Answer:

D) When you increase the distance over which effort is expended, you don't have to work as hard.

Explanation:

This statement reflects one of the principles of mechanical advantage. When you increase the distance over which effort is applied (in situations like using a lever or a simple machine), it allows you to achieve the same work with less force. It's the concept of trading off force for distance, which is a fundamental principle in physics and mechanics.

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Answers


The wording of the question is fundamentally defective,
and the question is therefore unanswerable. (But I'll
gladly accept your points anyway.)

"Amplitude" is the origin of the subjective impression of loudness.
"Pitch" is not.

There is no such concept as the 'loudness' of a pitch.


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Answers

The simplest explanation is that the speed changes. That causes the wavefront to change direction and so refraction takes place.

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Answers

You can use Vf^2-Vi^2 = 2ax

Vf^2 - 0 = 2(9.81)(25)

Or you can use energy

mgh = 1/2mv^2

2gh =v^2

Same thing