It took <u>6.73 seconds</u> for the cheetah to catch its prey.
Why?
If we want to calculate the time taken for the cheetah to catch its prey, we need to make their equation of position equals.
For the cheetah we have:
For the gazelle we have:
Now, substituting and calculating, we have:
Hence, we have that it took 6.73 seconds to the cheetah to cath its prey.
Have a nice day!
The rotational speed of the two children is the same.
In fact, it is defined as
where
is the angle covered in the time
. As it can be seen, this quantity does not depend on the distance from the centre, so the rotational speed is 4.0 revolutions per minute for both children.
Answer:
Explanation:
Distance to Andromeda galaxy
Speed of light is
Time is given by
Hence, the light from Andromeda left ago
Answer:B
Explanation:
A rollercoaster at the bottom of a hill
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.