true or false questions about motion-thanks so much!?

Question

T or F determine if the word with ** makes the phrase true or false. if false what's true?

1. If movement is constant,it is *possible* to determine whether you or another object is moving.

2. There is only *1* frame of reference.

3. Speed that does not change is called *constant speed*

4. When you write the velocity of a hurricane you need to write the *direction*

5.Velocities that have the same direction combine by *subtraction*

6. A rocket going to the moon is an example of *deceleration*

7. In circulat motion the velocity is *continuosly changing*

8. *all* moving objects have momentum.

9. A bullet has a large momentum because of it's *velocity*

10. A total momentum before and after a collision is *unchanged*.

11. A *distance time graph* is shown with a curve.


thanks so much for the help
sorry i know it's a lot of questions

Answer 1

1. F
there are different frames of reference for everything, so you are moving in the objects frame of reference and the object is moving in your frame of reference.

2. F
There are infinite frames of reference

3.T

4.T
Velocity is a vector and therefore always has a direction

5.F
Velocities are added

6.Uncertain
A rocket needs to accelerate to escape earth's gravitational pull, and then decelerates to counter the moon's gravitational pull when it gets there.

7.T
In circular motion, although the speed of the object may be unchanged, the direction is always changing, therefore the velocity is always changing

8.T
All objects with mass and velocity will have momentum

9.T
A bullet has relatively small mass but makes up for it in velocity when calculating momentum

10.T
but only in a perfectly inelastic world. In actual fact the total momentum is less after than before because of loss energy in the collision

Answer 2

I answered as well as I could:
1. Motion depends on the point of reference.
2.F. There can be many frames of reference.
3.T
4.T. Velocity is a vector quantity. It has both magnitude and direction.
6. As a rocket lifts off, its speed increases, but there is also the force of gravity acting on it, so I'm not so sure about this one.
7. T. In circular motion, velocity changes with change in direction.
8. T
9. T
10.T
11. It depends on the motion of the object. If it moves with uniform speed, it is a straight line inclined to the time axis. If it has non-uniform speed, it will be a curve. If the object is at rest, it will be a straight line parallel to time axis.

Didn't quite understand no.5

Answer 3

3. T, 4.T, 5.F, 6.F 7.T 8. T 9. T 10 T 11 T ( a straight line is also a special case of a curve)

1 and 2 are right now not answerable by me. Sorry

Answer 4

#five will have to be re written as, The finish merchandise of a response come from components that you simply begin with. This does not account for the reality of warmness or environmental standards. #eleven is fake. Gases are effortless to compress relying to your factor of view. If you may have the money for the desktop that turns a fuel right into a liquid, then it is an effortless factor to do. Is this quiz for fundamental, prime tuition, or institution?

Answer 5

1) false; constant v can be 0
2) No; infinite frames of reference. If you're standing outside a bus as the bus stops, there can be 500,000 other people witnessing the same thing, as long as its outside the bus (non-accelerated frame). Their frames are all valid.