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Molodets [167]
2 years ago
10

. A ball is thrown downward at a speed of 20 m/s. Choosing

Physics
1 answer:
a_sh-v [17]2 years ago
3 0

The final velocity is v = 20 - gt

The distance traveled by the ball at time t is y = y_o + (-20)t - \frac{1}{2} gt^2

The maximum distance traveled by the object is 0 = (20)^2 - 2g(y-y_0)

The given parameters;

initial velocity of the ball, u = 20 m/s

acceleration due to gravity, g = 9.8 m/s²

The final velocity can be calculate as;

v = 20 - gt

The distance traveled by the ball at time t;

y = y_o + (-20)t - \frac{1}{2} gt^2

The maximum distance traveled by the object is calculated as;

v^2 = u^2 - 2g(y - y_0)\\\\0 = (20)^2 - 2g(y-y_0)

Learn more here: brainly.com/question/16878713

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Answer:

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An ambulance is traveling east at 61.9 m/s. Behind it there is a car traveling along the same direction at 28.5 m/s. The ambulan
inessss [21]

Answer: 0.4 m

Explanation:

Given

Speed of ambulance, vs = 61.9 m/s

Speed of car = 28.5 m/s

Frequency of ambulance siren, f = 694 Hz

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With speed of ambulance being (61.9 m/s) -> We solve using

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fd = 694 * (343 / 281.1)

fd = 694 * 1.22

fd = 847 Hz

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λ = v/f

λ = 343/847

λ = 0.4 m

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2 years ago
Please choose the answer that describes the scientific notation for 5,098,000. 
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D. 5.098 x 106 is the correct answer when reduced to the proper notation.
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