PHYSICS MIDDLE SCHOOL

In what direction does an applied force move an object? A.
in the same direction as the force

B.
independent of the force

C.
in the opposite direction of the force

D.
perpendicular to the force

Answers

Answer 1
Answer:

Answer:

In the same direction as the force

Explanation:

Consider an object in which force is applied. The force applied moves the object in the direction of the force.

Suppose if the force is applied to the moving object in that case object moves in the direction of the stronger force.

Thus, according to the given question the applied force moves the object in its direction.
Answer 2
Answer: When you apply force on an object you 'accelerate' it. Of courese if there are no other forces, if there are some other forces, you will have to find the net force, and that will give you the direction for acceleration. Now why does an object acceleratee ? The formula for force is, mass times acceleration F=m\cdot a . That means if an mass is accelerating that means a force is applied to it basicly. So acceleration has a direction. A object's acceleration's direction shows where the object will move. Meaning the answer is. A.
in the same direction as the force (btw acceleration and the net force have the same direction)

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Answers

Answer:

decantation, distilling, freezing

A basketball has a mass of 1 kg and is traveling 15 m/s. How fast would a 5 kg bowling ball have to travel to have the same momentum?A) 3 m/s

B) 15 m/s

C) 1 m/s

D) 5 m/s

Answers

A) 3 m/s. Hope this helps.

Answer:

A 3m/s

Explanation:

Took the test (k12)

Ionic compounds molecules have strong forces of attraction between neighboring molecules. Which conclusion could be drawn about materials held together by ionic bonds? A) These materials would have low densities as solids. Eliminate B) These materials would have very high boiling points. C) These materials will likely be gases at room temperature. D) These materials will likely be liquids at room temperature.

Answers

Answer:

these material would have very high boiling points

Answer: B

Explanation:

Which air mass would produce warm,humid weather in the summer?

Answers

Answer:

The correct answer is the maritime tropical air masses.

Explanation:

These air masses are loaded with moisture with the water on which they are produced and heated as well.These air masses are form over the ocean in the hot areas of the Gulf of Mexico and the tropics.

Later they move towards the north, which brings an increase of humidity and hot winds to the United States. This phenomenon generates an increase in the probability of rains and generally occurs in the summer season in the southern states of the country. But nevertheless they can be formed throughout the year.

Answer:

Maritime tropical

Explanation:

The maritime tropical air mass typically produce warm, humid weather in the summer.

1)A cyclist travels ¾ of a circular track from A to b as shown in figure. The radius of the circular track is 400 m. Calculate the displacement and distance travelled by the cyclist.PLEASE SHOW ALONG WITH STEPS(1)

2)Two objects having their masses 3:5 are acted upon by two forces.The forces are in the ration of 5:3. find the ration in their accelerations.

PLEASE SHOW ALONG WITH STEPS (2)

3) A man pushes a box of mass 50 kg with a force of 80 N. What will be the acceleration of the box due to the force? what would be the acceleration if the mass were doubled?

PLEASE SHOW ALONG WITH STEPS(3)

4) How does the force of gravitation between two objects change when the distance between them is reduced to half.

PLEASE SHOW ALONG WITH STEPS (4)

5) Explain what happens to the force between two objects if:
A) the mass of one object is doubled?
B) the distance between the object is tripled.

PLEASE SHOW ALONG WITH STEPS (5)

6)How will the equations of motion for an object moving with a uniform velocity change?

PLEASE SHOW ALONG WITH STEPS (6)

7)The force of attraction between two bodies is 20N. Calculate the force between them when mass of each body as well as the distance between them are halved.

PLEASE SHOW ALONG WITH STEPS(7)

Answers

1).  Distance is the length of the path he traveled.  That's 3/4 of the circle.

Displacement is the length between where he started and where he ended.
That's 1/4 of the circle.

The circumference of a circle is  (2 pi) · (the circle's radius) .

2).  Force = (mass)·(acceleration)            F = M·A
This is a very important formula.  You should memorize it. 
Whenever you see a problem that has force, mass, and
acceleration in it, this is the formula you need.

If you need to find acceleration (like in this problem),
divide each side by (mass), and then you have
           
                        Acceleration = (force) divided by (mass) .

First object:  Mass=3,  Force=5.  Acceleration= 5/3 .

Second object:  Mass=5,  Force=3.  Acceleration= 3/5 . 

The question is asking for the ratio of these forces.

3).  Guess what !        F = M · A .

Divide each side by Mass, and then you have

                 Acceleration = (force) divided by (mass)

                                       =  (80 N)  /  (50 kg)  =  ?

If the mass were doubled, it would be

                                           (80 N)  /  (100 kg)  =  ?

4).  The force of gravity changes opposite to the distance between
the objects.  That's why the Earth pulls on us harder than Jupiter does.
The farther apart things are, the WEAKER gravity pulls them together.

How fast does the gravity force decrease ?
It decreases with the SQUARE of the distance.
That means . . .
-- If the distance changes to 3 times as far, the force becomes 1/3² = 1/9 .
-- If the distance changes to 2 times as far, the force becomes 1/2² = 1/4 .
-- If the distance changes to 1/3 as far, the force becomes (3²) = 9 .
-- If the distance changes to 1/2 as far, the force becomes (2²) =  ?

5).  A). The force of gravity increases as much as the PRODUCT of
the masses increases.
If one mass is B and the other mass is D, then the force calculation
has 'B·D' in it.  If one of the masses doubles, then the calculation
has '2·B·D' in it.  How much did the original force change ?

5). B).  This was all covered in the discussion of #4).

6). 'Uniform velocity' means the object is moving in a straight line
with a constant speed.  Its speed is not changing, and its direction
isn't changing either.
If a little tiny physicist is riding inside that object, there's NO TEST
he can do that can show him that he's moving.  He has all of the SAME
laws of motion that any other physicist has, who's moving in any other
direction with any other constant speed.

7).  Their masses are 'B' and 'D'.   The original product is 'BD'.
When each mass is cut in half, they'll become B/2 and D/2.
Their product will become  BD/4 .
That change alone will change the force to 1/4 of what it was originally.

If the distance between them is cut in half, then the force
changes to (2²) = 4 times what it was originally.

So the combined effect of all these changes at the same time
is that the new force is exactly equal to the original force.
 

What's the difference between the movement of particles in liquid and the movement of particles in gases

Answers

liquids move freely and slide past each other while gases move in zig zag motions not sliding past each other at all they're all over the place
Gas is like just air, but liquid, is water. Water, moves quickly, when, air just kind of like moves like in a weird way, like if you see it move over hot tea, that is how it would look like. So, that should help you, have a great day!
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