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galina1969 [7]
2 years ago
9

What force is required to give an object with mass 300 kg an acceleration of 2 m/s^2

Physics
1 answer:
mariarad [96]2 years ago
6 0
Fnet=ma would be the formula you use. I will just do it step by step to show you.

Fnet=ma
Fnet=300•2
Fnet=600N
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balandron [24]

Answer:

I think its the Blue wave, im not sure so dont take my word for it.

Explanation:

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3 years ago
A brick and a feather fall to the earth at their respective terminal velocities. Which objectexperiences the greater force of ai
Karo-lina-s [1.5K]

Answer:

Under the reasonable assumption that the brick has more mass than the feather, the brick experiences a greater force of air friction.

Explanation:

<u>Objects at terminal velocity</u>, only under the influence of gravity, have maximized their speed and <u>have an acceleration of zero</u>.  Thus, neither object is accelerating.

Recall Newton's second law: \sum {\vec {F}}=m \vec {a}

Since acceleration for each object is zero, the sum of the force acting on each of those objects must also be zero.

Since the only forces acting on the objects are gravity and the force of air friction, in order to zero out, <u>the force of air friction must be equal in magnitude and opposite in direction to the force of gravity</u>.

Recall that near the surface of the earth, F_{gravity}=mg, so <u>the Force of Gravity acting on an object is directly proportional to the object's mass</u>.  <em>(A similar argument could be made even if this were not taking place on the surface of the earth, so long as the objects were the same distance from the object providing gravitational influence).</em>

If the masses of the objects are different, <u>the object with the greater mass will experience</u> a larger force of gravity, and hence <u>a larger force of air friction</u> at terminal velocity.  

Under the reasonable assumption that the brick has more mass than the feather, the brick experiences a greater force of air friction.

4 0
2 years ago
What are two ways to change the state of a substance?
weeeeeb [17]
Solid to liquid
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By adding or removing heat energy aka thermal energy 
7 0
3 years ago
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Atmospheric conditions near a mountain range are such that a cloud at an altitude of 2.00 km contains 3.20 ✕ 10^7 kg of water va
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Answer:

time required is 6.72 years

Explanation:

Given data

mass m = 3.20 ✕ 10^7 kg

height h = 2.00 km = 2 × 10^3 m

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to find out

time period

solution

we know work is mass × gravity force × height

and power is work / time

so we say that power =  mass  gravity force × height / time

now put all value and find time period

power =  mass × gravity force × height / time

2.96 × 10^3 =  3.20 ✕ 10^7  × 9.81× 2 × 10^3  / time

time =  62.784 × 10^10 / 2.96 × 10^3

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3 0
3 years ago
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Pavlova-9 [17]

Answer:

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Explanation:

Solution:-

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- so we can mathematically express the index of refraction as a ratio of light speed in the material specified and speed of light.

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3 years ago
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