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4 years ago

Please help me with my physics I don’t understand! Please provide work.

Physics

1 answer:

arsen [322]4 years ago

7 0

Ok I figured it out and hope it’s right
So the first object moving right at 5m/s
The second one moves left at 4m/s
If we multiply 2kg (5m/s) =10 kg/m/s
Same thing with the second one 1kg(4m/s)=4kg/m/s
We got two speeds and if we add them together we get 14 but I’m not sure about the units
So the answer would be A) 14m/s

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Answer:

216 m

Explanation:

Assuming a straight line:

Δx = vt

Δx = (12 m/s) (18 s)

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3 years ago

The 2nd largest hailstone every measured fell in Aurora, Nebraska, in 2003. The circumference of that hailstone was 16 inches. U

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Answer:

1. What was the diameter of the hailstone in inches_5.09_ and in cm___12.92___ and in feet ____0.42___?

2. What was the total volume of the hailstone in cubic inches___68.64___ and cubic feet____0.03____?

3. What was the fall velocity of this hailstone in m/s_____2.584____ and in mph___5.78_____?

Explanation:

1. If the circumference (L) of the stone is 16 inches, then from the following equation

$L = 2\pi R$

$R = \frac{L}{2\pi} = \frac{16}{2\pi} = 2.54 ~inches$

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2. The total volume is

$V = \frac{4}{3}\pi R^3 = \frac{4}{3}\pi (2.54)^3 = 68.64~in^3\\68.64 ~in^3 = 0.03~ft^3$

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3 years ago

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Answer:

Making an observation.

Stating a question.

Formulating a hypothesis.

Conducting an experiment.

Analyzing the data and drawing conclusions.

Explanation:

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3 years ago

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3 years ago

A 1kg box is pushed on a flat surface that is 250m long. The box is initially at rest and then pushed with a constant Net force

sasho [114]

Answer:

C) 50 m/s

Explanation:

With the given information we can calculate the acceleration using the force and mass of the box.

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List out known variables:

v₀ = 0 m/s
a = 5 m/s²
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Looking at the constant acceleration kinematic equations, we see that this one contains all four variables:

v² = v₀² + 2aΔx

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3 years ago