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3 years ago

If you know a car is traveling 300 km in 3 hours, you can find its

Physics

1 answer:

alexandr402 [8]3 years ago

5 0

you can find the rate that it is traveling at. r=d/t. r=300/3. which equals 100km per hour

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Two horizontal forces act on a 1.4 kg chopping block that can slide over a friction-less kitchen counter, which lies in an xy pl

kogti [31]

Answer:

Part a)

$a = (0.64\hat i - 0.5 \hat j)m/s^2$

Part b)

$a = (0.64\hat i + 5.21 \hat j)m/s^2$

Part c)

$a = (4.92\hat i - 0.5 \hat j)m/s^2$

Explanation:

As per Newton's II law we know that

F = ma

so we will have

$a = \frac{F}{m}$

so we will have

$a = \frac{F_1 + F_2}{m}$

Part a)

$a = \frac{(3.9 \hat i + 3.3 \hat j) + (-3\hat i - 4\hat j)}{1.4}$

$a = \frac{0.9 \hat i - 0.7 \hat j}{1.4}$

$a = (0.64\hat i - 0.5 \hat j)m/s^2$

Part b)

$a = \frac{(3.9 \hat i + 3.3 \hat j) + (-3\hat i + 4\hat j)}{1.4}$

$a = \frac{0.9 \hat i + 7.3 \hat j}{1.4}$

$a = (0.64\hat i + 5.21 \hat j)m/s^2$

Part c)

$a = \frac{(3.9 \hat i + 3.3 \hat j) + (3\hat i - 4\hat j)}{1.4}$

$a = \frac{6.9 \hat i - 0.7 \hat j}{1.4}$

$a = (4.92\hat i - 0.5 \hat j)m/s^2$

3 0

3 years ago

What happens when light strikes a translucent object??

Ivan

It allows the light to pass through but no other object can

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If the density of an object is 30 g/cm3 and its volume is 10 cm3, what is its mass in grams?

Inga [223]

Density = Mass / Volume

Mass = Density * Volume

Mass = 30 g/cm³ * 10 cm³ = 300 g

Mass = 300 g

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2 years ago

5. Peter had an inflated balloon that he released and flies across the room. The balloon slows down and then stops on top of the

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I think it is c because it was slowing down I don’t know for sure

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Easy. When scientists in those countries are off work, they use the
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3 years ago

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