The formulas N2 and H2O and CO2 all represent molecules which are defined as
1 answer:
You might be interested in
Answer:
a
b
Explanation:
From the question we are told that
The velocity of the river due east is
The velocity of the boat due north is
The width of the river is
Generally the velocity of the boat relative to the shore
=>
=>
Generally direction of the boat relative to the shore is mathematically represented as
=>
=>
=>
Generally the distance covered by the boat in the direction of flow of the river before reaching the north shore is mathematically represented as
=>
=>
The velocity of the brick is 39.2 m/s downward
Explanation:
The motion of the brick is a free fall motion, since the object is affected only by the force of gravity. Therefore, it has a uniformly accelerated motion towards the ground, with constant acceleration of .
So, we can find its velocity using the suvat equation:
where
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time
For the brick in this problem (taking downward as positive direction)
u = 0 (it is dropped from rest)
Therefore, its velocity after t = 4.0 s is:
Downward, because the sign is positive.
Learn more about free fall motion:
#LearnwithBrainly