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3 years ago

8

If you run 10 km east and then turn around and run 7 km west, how much total distance have you travelled? A. 17 km B. 70 km C. 3

km D. 2.5 km

2 answers:

iren2701 [21]3 years ago

5 0

A. 17km because that is the total amount you have moved if the question was asking displacement it would be 3.

Tom [10]3 years ago

4 0

It's A 17 km because the total km walked is 17.

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Tudy the images about geologic time.

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Answer:

The first flowering plants appeared in the Mesozoic era, not the Paleozoic era.

Explanation:

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2. The weight of a basketball player is 6 ft and 1 12 inches. Change his height to:

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3 years ago

You push on a box with 100 N of force, causing it to accelerate at 5 m/s?.

Xelga [282]

<h3><u>Given</u><u>:</u><u>-</u></h3>

Force,F = 100 N

Acceleration,a = 5 m/s²

<h3><u>To</u><u> </u><u>be</u><u> </u><u>calculated:-</u><u> </u></h3>

Calculate the mass of the box .

<h3><u>Formula</u><u> </u><u>used:-</u><u> </u></h3>

$\bf \: Force = Mass \times Acceleration$

<h3><u>Solution:-</u><u> </u></h3>

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3 years ago

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A block oscillating on a spring has period T = 2.8 s . (Note: You do not know values for either m or k. Do not assume any partic

olasank [31]

Answer:

Part a)

T = 3.96 s

Part b)

T = 1.98 s

Part c)

T = 2.8 s

Explanation:

As we know that time period of spring block system is given as

$T = 2\pi\sqrt{\frac{m}{k}}$

T = 2.8 s

Part a)

If the mass of the block attached is doubled

then we will have

$T' = 2\pi\sqrt{\frac{2m}{k}}$

$T' = \sqrt2 T$

$T' = 3.96 s$

Part b)

If the spring constant is doubled

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Part c)

If the amplitude is halved but mass and spring constant will remain the same

so here we know that time period does not depends on Amplitude

so we will have

$T = 2\pi\sqrt{\frac{m}{k}}$

T = 2.8 s

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3 years ago