They all travel by the same speed and light
Acceleration = change in velocity/change in time
So you should have (20-10)/(0-2)= -10/2 = -5
So your answer is -5
The answer is B, if your body doesn’t consume enough vitamin D, it takes calcium from your bones. This is called losing bone mass. Losing bone mass makes the inside of your bones weaker and have a higher risk of fractures (especially children).
These types include gamma rays, x-rays, ultraviolet, infrared, microwaves and radio waves. Together with visible light, all these types of radiation make up what we call the electromagnetic spectrum - the complete spectrum of radiation.
Answer:
V' = 4.56Km/s
Explanation:
We can use the formula of Orbital Speed, who say,
The relative velocity is given by,
We need to find the relation between the two speeds,
Substituting,
