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3 years ago

A man has a mass of 110 kg. What is his weight? A. 110N B. 1325 N C. 559 N D. 1078 N

Physics

1 answer:

Slav-nsk [51]3 years ago

7 0

Answer:

Option D

Explanation:

Given:

Mass = m = 110 kg

Acceleration due to gravity = g = 9.8 m/s

Required:

Weight = W = ?

Formula

W = mg

Solution:

W = (110)(9.8)

W = 1078 N

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A test of the prototype of a new automobile shows that the minimum distance for a controlled stop from 95 km/h to zero is 55 m.

iris [78.8K]

Answer:

-0.64525g

Explanation:

t = Time taken for the car to stop

u = Initial velocity = 95 km/h

v = Final velocity = 0 km/h

s = Displacement

a = Acceleration

Equation of motion

$v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{0^2-95^2}{2\times 0.055}\\\Rightarrow a=-82045.45\ km/h^2$

Converting to m/s²

$a=82045.45=\frac{82045.45\times 1000}{3600\times 3600}=-6.33\ m/s^2$

g = Acceleration due to gravity = 9.81 m/s²

Dividing both the accelerations, we get

$\frac{a}{g}=\frac{-6.33}{9.81}=-0.64525\\\Rightarrow a=-0.64525g$

Hence, acceleration of the car is -0.64525g

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4 years ago

Which of the following characteristics of the earth are essential to the existence of life?

Rudiy27

Answer: What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.

Explanation:

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3 years ago

Two groups of students made plans to help their community during a hurricane. The first group suggested training the community a

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The correct option is D.
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Fe has the electron configuration [Ar]3d64s2. What is the magnitude of the orbital angular momentum for its most energetic elect

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