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3 years ago

A dog has a mass of 20 kg. If the dog is pushed across the ice with a force of 40 N, what is its acceleration?

Physics

1 answer:

olasank [31]3 years ago

7 0

Answer:

The acceleration is 2 m/s2.

Explanation:

We calculate the acceleration (a), with the data of mass (m) and force (F), through the formula:

F = m x a ---> a= F/m

a = 40 N/20 kg <em> 1N= 1 kg x m/s2</em>

a= 40 kgx m/s2/ 20 kg

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Can someone help me?!!!!!

ladessa [460]

Answer:

magnitude: 21.6; direction: 33.7 degrees

Explanation:

When we multiply a vector by a scalar, we have to multiply each component of the vector by the scalar number. In this case, we have

vector: (-3,-2)

Scalar: -6

so the vector multiplied by the scalar will have components

$(-3\cdot (-6), -2 \cdot (-6))=(18,12)$

The magnitude is given by Pythagorean's theorem:

$m=\sqrt{18^2+12^2}=21.6$

and the direction is given by the arctan of the ratio between the y-component and the x-component:

$\theta = tan^{-1} (\frac{12}{18})=33.7^{\circ}$

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3 years ago

Gauss's law: Group of answer choices can always be used to calculate the electric field. relates the electric field throughout s

kvasek [131]

Answer:

relates the electric field at points on a closed surface to the net charge enclosed by that surface.

Explanation:

Gauss Law states that overall electric flux of a closed surface is equivalent right to charge enclosed which is divided by the permittivity. In other words Gauss Law stress that

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The Gauss law can be expressed mathematically as

ϕ = (Q/ϵ0)

Q = total charge within the surface,

ε0 = the electric constant

5 0

3 years ago

A 20 N force is applied to an object causing it to move 10 m. How much work was done on the object? How much energy was needed t

olga2289 [7]

Answer:

Here, force=20N and displacement=10m

Work=Force×Displacement=20N×10m=200Nm

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3 years ago

1. In which direction can a force be exerted on an object?

Misha Larkins [42]

I believe that number 2 is A, not sure though.

7 0

2 years ago

If an ice skater with a mass of 50 kg was accelerating at 10 m/s and is on her way to hit a

IrinaK [193]

500N

Explanation:

Given parameters:

Mass of skater = 50kg

Acceleration = 10m/s

Unknown:

Force = ?

Solution;

Force is a push or pull on a body. it is given as the product of mass and acceleration:

Force = mass x acceleration

Input the parameters:

Force = 50 x 10 = 500N

She hits the wall with a force of 500N

Learn more:

Force brainly.com/question/3820012

#learnwithBrainly

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3 years ago