I believe the answer is true. Hope this helped!
It is the acceleration of an object in free fall
Explanation:
When an object is in free fall, it is subjected only to one force: the force of gravity, which pulls the object downward, with a magnitude (near the Earth's surface) which is given by

where
m is the mass of the object
is the acceleration due to gravity
We can apply Newton's second law to the object in free fall:

where
F is the net force on the object
a is the acceleration of the object
m is the mass
However, since there is only the force of gravity acting on the object, the net force is equal to the force of gravity: so we can equate the two equations, obtaining that

Which means that the acceleration of an object in free fall (acted upon the force of gravity only) is equal to the acceleration due to gravity,
.
Learn more about gravity:
brainly.com/question/1724648
brainly.com/question/12785992
#LearnwithBrainly
We know, v = d / t
Here, d = 75 Km
t = 1 hour
Substitute their values,
v = 75 / 1
v = 75 Km/h [ North ]
In short, Your Answer would be 75 Km/h towards north
Hope this helps!
Answer:
Fr = 150 [N]
a = 5 [m/s²]
Explanation:
In order to find the resulting force, we must assume that the thrust force is positive to the right, while the friction force is negative to the left.
![F_{r}=200-50\\F_{r}=150[N]](https://tex.z-dn.net/?f=F_%7Br%7D%3D200-50%5C%5CF_%7Br%7D%3D150%5BN%5D)
Now Newton's Second Law tells us that the sum of the forces or the resulting force is equal to the product of mass by acceleration.
F = m*a
![150 = 30*a\\a=150/30\\a = 5 [m/s^{2} ]](https://tex.z-dn.net/?f=150%20%3D%2030%2Aa%5C%5Ca%3D150%2F30%5C%5Ca%20%3D%205%20%5Bm%2Fs%5E%7B2%7D%20%5D)
Answer:
Alpha particles are not used to check baggage in airport as these rays are not penetrated far through matter.
<u>Explanation:
</u>
Alpha particles are produced by the <em>decay of a radioactive nucleus.</em> These alpha rays are <em>ceased by paper</em>. The <em>nucleus</em> of the helium atom is made up of <em>two protons and two neutrons</em> is the particle <em>ejected by alpha particle</em>.
As helium is <em>harmless and as an inert gas</em>, so these particles are not dangerous in themselves. The airport baggage security uses only X-ray scanners to inspect. These rays identify the <em>hidden items inside the baggage.
</em>