A car drives around a horizontal, circular track at constant speed. Consider the following three forces that act on the car: (1)
1 answer:
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Answer:
The height of mountain in meter will be 106.2732 m
Explanation:
We have given height of mountain = 348 ft,8 in
We know that 1 feet = 0.3048 meter
So 348 feet
And we know that 1 inch = 0.0254 meter
So 8 inch
So the total height of mountain in meter = 106.07+0.2032 = 106.2732 m
The height of mountain in meter will be 106.2732 m
Answer:
a) correct answer is C , b) 14º from the west to the north, c) v_{1g} = 300.79 km / h
Explanation:
This is a relative speed exercise using the addition of speeds.
1) when it is not specified regarding what is being measured, the medicine is carried out with respect to the Z Earth, therefore the correct answer is C
2 and 3) In this case we must compose the speed using the Pythagorean Theorem.
² =
² +
²
where v_{1a} is the speed of the airplane with respect to the air, v_{1g} airplane speed with respect to the Earth, v_{ag} air speed with respect to the Earth
in this case let's clear the speed of the airplane with respect to the Earth
v_{1g} = √(v_{1a}² - v_{ag}²)
v_{1g} = √ (310² - 75²)
v_{1g} = 300.79 km / h
we find the direction of the airplane using trigonometry
sin θ = v_{ag} / v_{1a}
θ = sin⁻¹ (v_{ag} /v_{1a})
θ = sin⁻¹ (75/310)
θ= 14º
the pilot must direct the aircraft at an angle of 14º from the west to the north