All categories

3 years ago

How do you know when to use each equations of motion while solving numericals? Please help as soon as possible .

Physics

1 answer:

posledela3 years ago

8 0

Answer:

You must catch the known-variables and the unknown-variables from the question to use the right equation.

Explanation:

Whenever you are solving a numerical, follow these steps:

1. From the asked question, jot down the given variables like initial velocity, total time, or acceleration etc.

2. After that, write the variable which is asked and put a question mark next to it.

3. Now that you have the given information and asked information in terms of variables, you should see which equation has all those variables. It might be helpful to jot down all three equations of motion on a side of paper. Once you have all three equations in front of you, you can easily spot the equation which has all the known and unknown variables in it.

Note: Sometimes, you might have to use more than one equations to get to the asked variable. You can think of that as two question instead of one, where you have to find out two variable instead of one.

You might be interested in

A woman is standing in the ocean, and she notices that after a wave crest passes by, five more crests pass in a time of 50.2 s.

lorasvet [3.4K]

Explanation:

(a) The period of a wave is the time required for one complete cycle. In this case, we have the time of five cycles. So:

$T=\frac{t}{n}\\\\T=\frac{50.2s}{5}\\T=10.04s$

(b) The frequency of a wave is inversely proportional to its period:

$f=\frac{1}{T}\\f=\frac{1}{10.04s}\\f=0.01Hz$

(c) The wavelength is the distance between two successive crests, so:

$\lambda=30.2m$

(d) The speed of a wave is defined as:

$v=f\lambda\\v=(0.1Hz)(30.2m)\\v=3.02\frac{m}{s}$

8 0

3 years ago

When we say that an object wants to maintain its state of motion, we’re talking about inertia. Which term determines the quantit

SVEN [57.7K]

Answer:

A. mass

Explanation:

Mass determines the quantity of inertia for an object. Mass is the quantity that depends upon the inertia of an object. The inertia that an object has is directly proportional to the mass of the object.

An object that has more mass has a greater tendency as compared to the object that has less mass to resist changes in its state of motion.

6 0

4 years ago

In order from lowest urgency to highest, which sequence properly ranks the product categories issued by the National Weather Ser

matrenka [14]

Answer:

In order from lowest urgency to highest, the sequence which properly ranks the product categories issued by the National Weather Service are as follows:

B- Outlook, Watch, Advisory, Warning.

Explanation:

An outlook for a hazardous weather describes the potential hazardous weather of concern in day 1 through 7. There are total two segments of the outlook, one for the marine zones and the second for the land based zones.

A watch is issued when there is the possibility of hazardous weather within 48 hours, it does not guarantee that a hazardous weather is going to come, it just reminds the possibilities of any such weather to come.

Advisory comes third in the urgency ranking, we can explain this through an example: a winter weather advisory may be issued for amount of freezing rain or when there are chance of 2 to 4 inches of snow. And, in winter weather, an warning may be issued when there is one fourth inch or more of ice accumulation.

4 0

3 years ago

When is an object moving in uniform circular motion?

Tems11 [23]

Answer: An object undergoing uniform circular motion is moving

Explanation:

4 0

3 years ago

Which of the following is an example of an object with kinetic energy?

Kaylis [27]

Answer:

A and C

Explanation:

Both have mass and are in motion

6 0

3 years ago

Read 2 more answers