Answer:
a)
b)
Explanation:
From the exercise we got final position, final velocity and how much time does it takes the body to cover the distance
From the concept of moving objects we know the following equations:
and
Now, we have two equations with two unknowns
(1)
Now, we need to replace (1) in the other equation
Solving for a
b)
Now, we can solve (1)
a)
Answer:
B. Smaller than
Explanation:
This question is from the Doppler effect. As the object which is in motion goes off from the other, there's a reduction in the frequency. This is due to the fact that successive soundwave get to be longer. So that the pitch will then be lowered. When the person observing moves towards what is making the sound, each soundwave that follows gets faster than the previous.
Answer:
the average speed in annual work out is 46.5
Answer:
Grow up man, this is completely based on your curriculum, we would need your book to answer, and this has to be done by you.
In my opinion i think it is water