To solve this problem we use kinematics formulas.
to. What was the acceleration of the rocket during the first 16-s?
Where
= speed after 16 s
= initial velocity = 0
= acceleration during 16 s
Now we use the formula for the position:
Where:
= position after 16 s
= initial position = 0
= 16 s
Then, we know that the altitude of the rocket after 20 s is 5100 meters.
Then we will raise the equation of the position of the rocket from the instant to
where:
Now we clear .
The aceleration is
So:
What is the speed of the rocket when it passes through a cloud at 5100 m above the ground?
The speed is 392.32 m/s
Answer:
-4.8 m/s²
Explanation:
Apply Newton's second law:
∑F = ma
F − mg = ma
300 N − (60 kg) (9.8 m/s) = (60 kg) a
a = -4.8 m/s²
The acceleration five seconds after jumping is 4.8 m/s² downward.
protons, neutrons, and electrons.
The answer to this question would be the Law of conservation of energy.
In every chemical reaction, 10 atoms of reacted will make 10 atoms as result. The number of atoms produced will be same as the number of ingredients. This will prove that the energy is <span>can neither be created nor destroyed; The energy is just changed into a different shape.</span>