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3 years ago

6

A force of 3,000 N is applied to a car, resulting in acceleration. In 10 s, the car increases its velocity from 0 m/s to 30 m/s.

What is the mass of the car?

1 answer:

Reil [10]3 years ago

6 0

Answer:

4.5 m/s

Explanation:

I am not sure if it correct.

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Why does Farm Bureau and other advocacy organization oppose any mandated labeling of biotech crops?

Step2247 [10]

Answer:

I’m. Nog sure

Explanation:

3 0

3 years ago

Two trucks with equal mass are attracted to each other with a gravitational force of 5.3 x 10 -4 N. The trucks are separated by

HACTEHA [7]

Answer:

7327 kg or 7.3 tons

Explanation:

We have Newton formula for attraction force between 2 objects with mass and a distance between them:

$F_G = G\frac{M_1M_2}{R^2}$

where $G =6.67408*10^{-11} m^3/kgs^2$ is the gravitational constant on Earth. $M = M_1 = M_2$ is the masses of the 2 objects. and R = 2.6m is the distance between them.

$F_G = 5.3*10^{-4}N$ is the attraction force.

$5.3*10^{-4} = 6.67408*10^{-11}\frac{M^2}{2.6^2}$

$7941265 = \frac{M^2}{2.6^2}$

$M^2 = 53682948.76$

$M = \sqrt{53682948.76} \approx 7327 kg$ or 7.3 tons

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4 years ago

A train is 240 meters long and travels 20 m/s. How long does

const2013 [10]

Answer:

=18 sec

Explanation:

240m=20m/s, find 360m

360×20÷240=30m/s

time=distance÷speed

240÷20=12sec

if 240=12sec,find 360

360×12÷240

=18 sec

6 0

3 years ago

What are atoms of the same element with different numbers of neutrons called?

Andrei [34K]

Answer:

These are called isotopes.

Explanation:

Please mark brainliest and have a great day!

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3 years ago

Where are active volcanoes most likely to found?

jolli1 [7]

Answer:

B. where tectonic plates meet

Explanation:

Most volcanoes occur near tectonic plate boundaries. For example, a large amount are found on the Ring of Firez connecting several plates.

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3 years ago