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4 years ago

How can you tell when an object changes direction on a displacement vs. time graph

Physics

1 answer:

adoni [48]4 years ago

7 0

Answer:

You can see it looking at the slope of the curve.

Explanation:

The slope of the curve its displacement / time, so its the celerity of the object. Now, when the object change direction of its movement, its must change the direction on which its moving, by definition. So, if the object is first getting away from its starting position, you will see its displacement grow, and the slope will be positive (or negative, it depends of the direction you put an positive displacement) Now, when its change position, the displacement will start to shrink, and the slope of the curve will be negative (or positive). To find out the exact moment in which the object changes direction, you can just look at when the slope its equal to zero. If the slope goes from positive to negative, or viceversa, it must pass by zero, the exact momento the object change direction.

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Stars set about how many minutes earlier each day? A. 8 B. 6 C. 4 D. 2

Furkat [3]

It is c which is four minutes per day

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3 years ago

What is an element that needs to lose or gain 4 valence electrons in order to become stable?

tiny-mole [99]

Answer:

Elements in Group 14 could lose four, or gain four electrons to achieve a noble gas structure. In fact, if they are going to form ions, Group 14 elements form positive ions. Carbon and silicon form covalent bonds. Carbon's millions of organic compounds are all based on shared electrons in covalent bonds.

Explanation:

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3 years ago

The distance between planets varies as they move in their orbits. The minimum distance from the Earth to Mars is about 0.35 AU.

Alina [70]

Answer:

52,360,000km

Explanation:

To solve this problem you use a conversion factor.

By taking into account that 1UA = 1.496*10^{8}km you obtain:

$0.35UA*\frac{1.496*10^{8}km}{1UA}=52,360,000km$

hence, 0.35UA is about 52,360,000km. This is the least distance between Mars and Earth

5 0

3 years ago

Read 2 more answers

Semmy [17]

Answer:

Physical properties are different from chemical properties of a substance. The main difference between physical and chemical properties is that physical properties can be observed without changing the chemical composition of a substance whereas chemical properties can be observed by changing the chemical composition of a substance.

Explanation:

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3 years ago

A ball is held at a height H above a floor. It is then released and falls to the floor. If air resistance can be ignored, which

Vaselesa [24]

Answer:

Straight line graph attached showing mechanical energy on x-axis and altitude y on y-axis

Explanation:

As mechanical energy is the sum of kinetic energy and potential energy, the ball at a height H possesses potential energy= m.g.H

and Kinetic energy= 0.

But the sum of both energies is equal to m.g.H.

When the ball starts moving, the height starts to decrease and potential energy also decreases with decreasing y. On the other hand kinetic energy starts increasing with decreasing Y. But their sum remains constant i.e equal to mechanical energy. It remains same until the ball touches the ground. The graph attached shows height H or altitude y on x-axis and Mechanical Energy on y-axis. It shows a straight horizental line showing that mechanical energy remains same as y decreases.

5 0

3 years ago