Describe how velocity changes with time

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Answer 1

Answer: Speeding up, slowing down, and changing direction ... like moving along a curve ... are all changes in velocity. They're also all accelerations.

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Energy can never be created or destroyed just blank or blank

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The law of conservation of energy states that energy can never be created nor destroyed but it can be conserved or transferred

transformes from one form to another like from KE to PE but it doesn't doe

A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a total of 2 minutes for the bicycle to return to point A. What is the average speed and average velocity of the bicycle?

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Answer:

2.5 m/s

0 m/s

Explanation:

Average speed is distance over time.

Average velocity is displacement over time.

The bicycle travels 150 meters from A to B, then 150 meters from B to A. So the distance is 300 meters and the displacement is 0 m.

s = 300 m / 120 s = 2.5 m/s

v = 0 m / 120 s = 0 m/s

What is the weight of an 1000 gram mass

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That depends on where you weigh it.

-- On Earth, it weighs 9.807 newtons (2.205 pounds).

-- On the moon, it weighs 1.623 newtons (5.84 ounces).

-- On Jupiter, it weighs 24.79 newtons (5.57 pounds).

BTW ... 1,000 grams of mass is called ' one kilogram '.

Well first and foremost, we can see that the problem gives us the mass in grams, which is a metric unit. And as such, we will want to solve for the metric unit of weight, the Newton.

In order to solve for weight, one must first realize what weight is. Weight is simply the force that the earth (or any given celestial being the object resides on) is applying to the object, to keep it pulled down. So weight is force.

Newton's second law of motion states that Force is equal to mass times acceleration. Mass is 1,000 grams, but one must keep in mind that a Newton is a kilogram times meter per second^2, so we want to convert our mass to kilograms. 1,000 grams is equal to 1 kilogram. Now we have our mass.

Next is acceleration. As stated earlier, weight is the force that gravity applies on an object, so acceleration must then be the acceleration due to gravity, which we know is 9.8 meters per second^2. Now we just plug in numbers.

F=ma

F=(1 kg)(9.8 m/sec^2)

F=9.8 (kg x m)/sec^2

F=9.8 N

Hence the earth is applying 9.8 Newtons of force on the object due to gravity, so the object weighs 9.8 Newtons
Hope this helps :)

What object circles around a planet

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A object that circles around a planet is called a satellite.

an object that circles around a planet is a satellite. earth's satellite is the moon.

When a wire is made thicker its resistance what?

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Making a wire thicker has the same effect as making a road wider. It makes it easier for the electron traffic to flow. The resistance decreases, and the current (traffic) increases.

What are the three types of protists? When is an organism classified as a protist?

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Answer:

Protozoa, Algae and Fungus-like protists. And by how they obtain nutrition.

Explanation:

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