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Elodia [21]
3 years ago
12

In the formula vy=a t what is the value of a for an object in projectile motion

Physics
1 answer:
Rus_ich [418]3 years ago
8 0
I THINK that formula gives the vertical speed of a projectile at the time
't' seconds after it's launched. 

(I can't really be sure of anything, because whenever you show a formula
to other people, you're supposed to tell them what each variable in it means,
and you didn't do that.)

If I'm on the right track, then the 'a' is the acceleration of gravity wherever
the projectile is flying.  If that happens to be on Earth, then the acceleration
is  9.8 meters per second² .
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Magnitude of acceleration = (change in speed) / (time for the change) .

Change in speed = (ending speed) - (starting speed)

                            =       zero            - (43 m/s)

                            =          -43 m/s .

Magnitude of acceleration = (-43 m/sec) / (0.28 sec)

                                          =  (-43 / 0.28)  (m/sec) / sec

                                          =        153.57...  m/s²

                                          =        1.5...  x 10²  m/s²  .

5 0
3 years ago
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If the frequency of a FM wave is 8.85 × 107 hertz, what is the period of the FM wave?
patriot [66]

Answer:

1.1299 x 10^-8   second    

Explanation:

Period = 1 / f = 1 / (8.85 * 10^7) = 1.1299 x 01^-8  sec

8 0
2 years ago
Which of the following describes wavelength?
blagie [28]
D. The number of wave that pass a point in a given amount of time
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A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2 m/s to 4 m/s?
mash [69]

Answer:

B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s

Explanation:

The momentum of an object is given by the product between its mass (m) and its velocity (v):

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Let's apply this formula to calculate the initial momentum and final momentum of the ball:

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p_i = m v_i = (6 kg)(2 m/s)=12 kg m/s

- Final momentum:

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So, the correct answer is

B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s

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3 years ago
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The centripetal acceleration of an object is given by the relation,

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