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NikAS [45]
3 years ago
15

three forces acting on an object F1=10Nup,F2=20Ndown,F3= 5Nup. Find the net force using head to tail diagram.

Physics
1 answer:
ANEK [815]3 years ago
5 0
<h3>The Net force would be 0N. When forces are the going the same direction you add them. So first add the forces that are going the same direction.10N+10N =20N. Now we have the same force going in opposite directions.This means subtraction. 20N-20N=0N. This situation is balanced which mean the Net force is 0N.</h3>

<em>i hope this helped:)!.</em>

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Answer:

19.53 cm

Explanation:

The computation of the height is as follows:

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As we know that

P.E of the block = P.E of the spring

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x = 0.037

So now put the values to the above formula

(0.15) (9.81) (h) = 1 ÷2 × 420 × (0.037)^2

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3 years ago
Lauryn serves a volleyball with a mass of 2.1 kg. The ball leaves her hand with a speed of 30 m/s.
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Hi! Let's see.

<h3><u>TOPIC: Kinetic Energy.</u></h3>

Explanation:

Data:

  • Mass(m) = 2.1 kilograms
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==================================================================

Use the kinetic energy formula:

  • \boxed{\boxed{\bold{E_{k}=\frac{m*(v)^{2}}{2}}}}

Replace by the data:

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We multiply speed squared:

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Multiply in the numerator, without forgetting the units:

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Both numerator and denominador operations are divided:

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Answer: The kinetic energy is <u>945 Joules.</u>

Cordially Alejanndraax. Greetings!

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