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LuckyWell [14K]
3 years ago
10

If the forces acting on an object are balanced, what must be true about the motion of this object?

Physics
2 answers:
Novay_Z [31]3 years ago
8 0
D it must have a constant velocity or it would not be balanced
Leokris [45]3 years ago
5 0

Answer:

D Constant velocity

Explanation:

if it has forces moving on it it has constant velocity

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Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant
chubhunter [2.5K]

Answer:

3.2 MN

Explanation:

Given that

Mass of the box, m = 52 kg

Initial velocity of the box, u = 400 m/s

Final velocity of the box, v = 0 m/s

Time taken for the collision, t = 0.0065 s

Using the equation of motion

V = u + at, we turn around and make acceleration, a the subject of the formula. Now we have,

a = (v - u) / t

a = (0 - 400) / 0.0065

a = 61538.5 m/s²

The acceleration(which is negative acceleration or retar.dation actually) is 61538.5 m/s². We then proceed to is this acceleration in the basic Force equation, to get the magnitude of force needed.

Remember,

Force = mass * acceleration

F = ma, we already have our mass and acceleration, all we do is multiply

F = 52 * 61538.5

F = 3200002 N or 3.2 MN

Therefore, the magnitude of the force that acts on the box during collision is 3.2 MN

8 0
3 years ago
What must occur for work to be done on an object?
stiv31 [10]
The answer is D since work done must have displacement..if theres force but no displacement there will be no work done based on W=Fs
4 0
3 years ago
Read 2 more answers
The four fundamental types of organic molecules are nucleic acids, proteins, lipids, and ________.
notka56 [123]
The other of the four organic molecules is carbohydrates. 
All four of them are:
Nucleic Acids (DNA and RNA stuff)
Proteins
Lipids
& Carbohydrates
4 0
3 years ago
Read 2 more answers
The unit of electrical current is the ampere (A).
IrinaVladis [17]

Answer:

option B

Explanation:

Current unit is ampere (A)

Ampere will be equivalent to = ?

we know,

Current can be define as the charge per unit time

I = \dfrac{Q}{t}

unit of charge(Q) is coulomb which is equal to C.

unit of time(t) is equal to 's'.

now,

I = \dfrac{C}{s}

unit of I = C/s

ampere(A) is equivalent to C/s

The correct answer is option B

4 0
3 years ago
Please help, im stuck on this question
saw5 [17]

Answer:

A) .27 A

Explanation:

v = ir

i = v/r

equivalent r  =   45 * 90 / (45+90) = 30 ohms    ( for the two r in parallel)

i = 8v / 30 ohm = 267 mAmps

8 0
2 years ago
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