2 years ago

Which of the following is true about the mass of an object?

1 answer:

5 0

I believe it is the first one

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svetlana [45]

The answer is b because I just know it is

7 0

2 years ago

lesya692 [45]

edcba i think brainliest

6 0

2 years ago

cricket20 [7]

Answer:

a) her velocity

4 0

2 years ago

emmainna [20.7K]

Yes they are the power goes from one to another and if one goes off another will go off too

5 0

3 years ago

Ainat [17]

Answer:

The asteroid's acceleration at this point is $2.71\ m/s^2$

Explanation:

The equation that governs the trajectory of asteroid is given by :

$x=6.5t-2.3t^3$

The velocity of asteroid is given by :

$v=\dfrac{dx}{dt}\\\\v=\dfrac{d(6.5t-2.3t^3)}{dt}\\\\v=6.5-6.9t^2$

At some point during the trip across the screen, the asteroid is at rest. It means, v = 0

So,

$6.5-6.9t^2=0\\\\t=0.971\ s$

Acceleration,

$a=\dfrac{dv}{dt}\\\\a=\dfrac{d(6.5-6.9t^2)}{dt}\\\\a=-13.8t$

Put t = 0.971 s

$a=-13.8\times 0.197\\\\a=-2.71\ m/s^2$

So, the asteroid's acceleration at this point is $2.71\ m/s^2$ and it is decelerating.

6 0

3 years ago