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3 years ago

What acceleration is imparted to a football when the player kicked it with a force of 25 N? mass of football=0.40 kg

1 answer:

6 0

Force = mass x acceleration

25N = 0.40kg x acceleration
25N/0.40kg = acceleration

acceleration = 62.5 N/kg
N/kg is the equivalent of m/s²

So your acceleration is 62.5 meters per second squared

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Two point charges are separated by a distance of 1 meter. How much would the force change if one charge was 4x larger?

jekas [21]

Answer:

the force would increase 4 times more

Explanation

more force results more mass or acceleration

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2 years ago

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Which best summarizes a concept related to the work-energy theorem?

Maurinko [17]

Answer:

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Explanation:

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The concept that summarizes a concept related to the work-energy theorem is that ''When work is positive, the environment does work on an object.''

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3 years ago

How much bigger is the sun than the earth?

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The sun is about 109 times larger than the earth in diameter. <span>1,300,000 Earths can fit in the sun.</span>

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3 years ago

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A 46.0-kg box is being pushed a distance of 8.80 m across the floor by a force P whose magnitude is 171 N. The force P is parall

dolphi86 [110]

Answer:

a) 1504.8 J

b) 991.76 J

c) 0J

d) 0J

Explanation:

(a) The work done by the force P on the box is given by the following formula:

$W_P=Px$

P: applied force = 171N

x: distance in which the for P is applied = 8.80m

you replace the values of P and x and obtain:

$W_P=(171N)(8.80m)=1504.8J$

(b) The work don by the friction force is:

$W_f=F_fx=\mu N x=\mu Mg x$

μ = coefficient of kinetic friction = 0.250

M: mass of the box = 46.0kg

g: gravitational constant = 9.8 m/s^2

$W_f=(0.250)(46.0kg)(9.8m/s^2)(8.80m)=991.76J$

$N=Mg=(46.0kg)(9,8m/s^2)=450.8N$

but this force does not do work on the box because the direction is perpendicular to the direction of the force P.

$W_N=0J$

(d) the same as before:

$W_g=0J$

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3 years ago

Current is directly proportional to resistance.<br> a. True<br> b. False

ikadub [295]

IF voltage remains constant, then current is
inversely proportional to resistance.

The correct response is "b).", signifying "false" as the choice.

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3 years ago