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2 years ago

If a body of mass 2 kg is moving with a velocity of 30 m/s, then

Physics

1 answer:

Svetllana [295]2 years ago

7 0

Answer:

d. 60

Explanation:

If a body of mass 2 kg is moving with a velocity of 30 m/s, then

on doubling its velocity the momentum becomes

a 30 kgm/s

b 90 kgm/s

C 120 kgm/s

d 60 kgm/s

HALPLPLPPLL

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If you took a white piece of plastic to a depth of 180 m, what color would it appear?.

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1 year ago

Luis and Aisha conducted an experiment. They exerted different forces on four objects. Their results are shown in the table.

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Answer:

Object 3 has greatest acceleration.

Explanation:

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1 10 kg 4 N

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2 years ago

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2 years ago

A 55-kg woman is wearing high heels.

Grace [21]

Answer:

Pressure, $P=1.90\times 10^7\ Pa$

Explanation:

It is given that,

Mass of the woman, m = 55 kg

Diameter of the circular cross section, d = 6 mm

Radius, r = 3 mm = 0.003 m

Let P is the pressure exerted on the floor. It is equal to the force acting on woman per unit area. It is given by :

$P=\dfrac{F}{A}$

$P=\dfrac{mg}{\pi r^2}$

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$P=1.90\times 10^7\ Pa$

So, the pressure exerted on the floor is $1.90\times 10^7\ Pa$ . Hence, this is the required solution.

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3 years ago