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galben [10]
3 years ago
7

Which of the following best describes the velocity of an object?

Physics
2 answers:
kirza4 [7]3 years ago
8 0

Answer:

Hello There!!

Explanation:

The answer iz C.30 m/s east because it has to contain the location the number and all the information to describe the velocity as the best.

hope this helps,have a great day!!

~Pinky~

Svetllana [295]3 years ago
5 0

Answer:

27

Explanation:

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A striped billiard ball moves toward the right with speed 3 m/s. A solid billiard ball with the same mass moves toward the left
Helen [10]

Answer:

Final speed of striped ball is 3 m/s in left direction .

Explanation:

Given :

Two billiard ball with the same mass moves toward the left at the same speed 3 m/s .

Let , us assume right hand side direction to be positive and left hand side direction to be negative .

Also , let speed of ball after collision is (striped ball ) u and (solid ball) v .

It is also given that the collision is elastic .

Therefore , kinetic energy is conserved .

\dfrac{m(3)^2}{2}+\dfrac{m(3)^2}{2}=\dfrac{mu^2}{2}+\dfrac{mv^2}{2}\\\\u^2+v^2=18 ...... ( 1 )

Also , by conserving linear momentum .

We get :

3m-3m=mu+mv\\u=-v                ...... ( 2 )

Putting value of u from equation 2 to equation 1 .

We get :

2v^2=18\\v=3\ m/s

And , u = -3 m/s .

Therefore , final speed of striped ball is 3 m/s in left direction .

Hence , this is the required solution .

4 0
3 years ago
If the force on an object is in the negative direction, the work it does on the object must be
garri49 [273]

Answer: Postive

Explanation:

8 0
2 years ago
The wavelength of light mainly affects our perception of
s2008m [1.1K]

Answer:

I would think the answer is color, if the wavelength is within the visible light spectrum. This could be answered in different ways but I'm pretty sure the answer you are looking for is hue/color.

6 0
3 years ago
Lenny loves physics and math. In which Energy career pathway would these interests be the most helpful?
vazorg [7]

Answer:

it is D

Explanation:

cause i took the test

3 0
3 years ago
Read 2 more answers
A small mailbag is released from a helicopter that is descending steadily at 2.00 m/s. After 5.00s what is the speed of the mail
grandymaker [24]
The acceleration of gravity (on Earth) is 9.8 m/s² downward.

This means that every falling object gains 9.8 m/s more downward speed
every second that it falls.

In 5 seconds of falling, it gains (5 x 9.8 m/s) = 49 m/s of downward speed.

If it was already descending at 2.0 m/s at the beginning of the 5 sec,
then at the end of the 5 sec it would be descending at

                                 (2 m/s  +  49 m/s)  =  51 m/s .
7 0
2 years ago
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