Gamma rays will damage - I mean almost instantly kill you. Gamma rays were the reason for one of Earth's biggest mass destinction
Answer: Option D is Correct!
In an orbiting station, after one foot pushes off there isn't a force to bring the astronaut back to the "floor" for the next step
Explanation:
Imagine how hard it is to jump as high as 6 meters on earth. This is as a result of the earth's gravitational pull, also known as the force of gravity, which is the force by which the earth attracts objects to towards it's center. This force of gravity accounts for the weight of a body, according to the equation below:
w=mg
Where;
W= weight of body
m= mass of body
g= acceleration due to gravity
But in space, the gravitational pull rule doest not apply. Because the moon's gravity is 1/6 of of the Earth, this leads to weightlessness in space. As a result, whenever an astronaut tries to walk normally inside an orbiting space station, there isn't enough gravitational pull to allow that. He gets thrown up due to weightlessness in space.
I think your second figure should be 6km/hour if that is the case then this is the answer.
Answer
A. Negative. this is because your speed is reducing which means you are decelerating or rather going at a negative (acceleration).
Answer:
a = 0.0505 [m/s^2]
Explanation:
In order to solve this formula we must use the following formula of kinematics.
where:
x = distance = 50000 [m]
Vo = initial velocity = 0
a = acceleration [m/s^2]
t = time = 23 [min] = 1380 [s]
Note: the positive sign in the above equation shows that the car accelerates.
50000 = (0*1380) + (0.5*a*1380^2)
a = 0.0525 [m/s^2]
But we can calculate the acceleration using the following formula:
where:
Vf = final velocity = 67 [m/s]
67 = 0 + (a*1380)
a = 0.0485 [m/s^2]
We can see that by means of kinematics and with the given values we can find two values of accelerations, however, we can determine the average acceleration, by means of the mathematical average.
a = (0.0485 + 0.0525) / 2
a = 0.0505 [m/s^2]
Answer:
<h2>135,000 J</h2>
Explanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 900 × 150
We have the final answer as
<h3>135,000 J</h3>
Hope this helps you