If the canyon below is 100.0 m deep, the rocket travels from the edge of
the cliff 226m in the horizontal direction.
<span>When </span>air resistance<span> acts, acceleration during a fall will be less
than g because </span>air resistance affects<span> the motion of the falling objects by slowing it
down. </span>Air resistance<span> depends on two important factors -
the speed of the object and its urface area.
Increasing the surface area<span> of
an object decreases its speed.</span></span>
The correct answer between all
the choices given is the first choice or letter A. I am hoping that this answer
has satisfied your query and it will be able to help you in your endeavor, and
if you would like, feel free to ask another question.
The answer is a. over use of petroleum
Answer:
(a) 34.4°
(b) 49.4 N
Explanation:
(a) From the diagram,
Amgle between the x axis can be calculated as,
cosΘ = adjacent/hypoteneous
cosΘ = 72.1/87.4
cosΘ = 0.8249
Θ = cos⁻¹(0.8249)
Θ = 34.4°.
Hence the angle between the x axis is 34.4°
(b) To find the component along the y axis we make use of pythagoras theorem.
a² = b²+c²................... Equation 1
Where a = 87.4 N, b = 72.1 N, c = y.
Substitute these values into equation 1
87.4² = 72.1² + y²
y² = 87.4²-72.1²
y² = 2440.35
y = √(2440.35)
y = 49.4 N
