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2 years ago

PLEASE HELP ASAP WILL GIVE BRAINLIEST

Physics

2 answers:

stealth61 [152]2 years ago

4 0

Explanation

(m) is measured in kilograms (kg)

<h2>(F) is measured in newtons (N)</h2>

<h3>acceleration (a) is measured in metres per second squared (m/s²)</h3>

Nikolay [14]2 years ago

4 0

Q1) <em>~</em><em>mass (m) is measured in kilograms (kg) </em>

Q2)<em>~</em><em>acceleration (a) is measured in metres per second squared (m/s²)</em>

Q3)<em>~</em><em>force (F) is measured in newtons (N)</em>

Hope this helped you- have a good day bro cya)

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mihalych1998 [28]

Explanation:

By the second law of Newton we get the relation

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2 years ago

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A weight suspended from a spring is seen to bob up and down over a total distance of 20 centimeters twice each second.

Zielflug [23.3K]

<u>Answer</u>

8. 2 Hz

9. 0.5 seconds

10. 20 cm

<u>Explanation</u>

Frequency is the number of oscillation in a unit time. It is the rate at which something repeats itself in a second.

In this case, the spring bob up and down 2 times per second.

∴ Frequency = 2 Hz

Period is the time taken to complete one oscillation.

2 oscillations takes 1 second

1 oscillation = 1/2 seconds.

∴ Period = 0.5 seconds

Amplitude is the the maximum displacement of the spring.

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2 years ago

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3 years ago

how much gravitational potential energy do you give a 70 kg person when you lift him up 3 m in the air?

SCORPION-xisa [38]

Given gravitational potential energy when he's lifted is 2058 J.

Kinetic energy is transferred to the person.

Amount of kinetic energy the person has is -2058 J

velocity of person = 7.67 m/s².

<h3>Explanation:</h3>

Given:

Weight of person = 70 kg

Lifted height = 3 m

1. Gravitational potential energy of a lifted person is equal to the work done.

$PE_g=W=m\times g\times h\\Acceleration due to gravity = g = 9.8 \ m/s^2 \\PE_g= m = m\times g\times h= 70\times 9.8 \times 3 = 2058\ kg.m/s^2 = 2058\ J$

Gravitational potential energy is equal to 2058 Joules.

2. The Gravitational potential energy is converted into kinetic energy. Kinetic energy is being transferred to the person.

3. Kinetic energy gained = Potential energy lost = $-PE_g = -2058\ kg.m/s^2$

Kinetic energy gained by the person = (-2058 kg.m/s²)

4. Velocity = ?

Kinetic energy magnitude= $\frac{1}{2} m\times v^2 = m\times g \times h$

Solving for v, we get

$v=\sqrt{2gh} =\sqrt{2\times 9.8 \times 3} = \sqrt{58.8} = 7.67 m/s^2$

The person will be going at a speed of 7.67 m/s².

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3 years ago

_______is the product of a force and the time during which the force acts

saul85 [17]

Answer:

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Explanation:

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2 years ago

PLEASE HELP ASAP WILL GIVE BRAINLIEST ​

PLEASE HELP ASAP WILL GIVE BRAINLIEST