The Mesozoic Era is a time in Earth history when ________.
1 answer:
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Answer:
The distance by the ball clear the crossbar is 1.15 m
Explanation:
Given that,
Distance = 44 m
Speed = 24 m/s
Angle = 31°
Height = 3.05 m
We need to calculate the horizontal velocity
Using formula of horizontal velocity
Put the value into the formula
We need to calculate the vertical velocity
Using formula of vertical velocity
Put the value into the formula
We need to calculate the time
Using formula of time
Put the value into the formula
We need to calculate the vertical height
Using equation of motion
Put the value into the formula
We need to calculate the distance by the ball clear the crossbar
Using formula for vertical distance
Put the value of h
Hence, The distance by the ball clear the crossbar is 1.15 m
Answer:
The resultant velocity is 86.1 mi/h.
Explanation:
The law of cosines is given by:
Where:
c: is the resultant velocity =?
a: is the velocity of the plane = 75.0 mi/h
b: is the velocity of the wind = 15.0 mi/h
θ: is the angle between "a" and "b"
The angle between "a" and "b" can be found as follows:
Now, by using the law of cosines we have:
Therefore, the resultant velocity is 86.1 mi/h.
The law of sines is:
Where:
γ: is the angle between "b" and "c"
α: is the angle between "a" and "c"
So, if we want to find "c" by using the law of sines, we need to know another angle besides θ (γ or α), and the statement does not give us.
I hope it helps you!