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miss Akunina [59]
2 years ago
13

A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s and kicks it in the same direction as it is moving,

increasing its speed to 12.8 m/s. What magnitude impulse did the soccer player deliver to the ball?
Physics
1 answer:
NISA [10]2 years ago
7 0

To develop this problem it is necessary to use the concepts related to Impulse.

The impulse is defined as the change in velocity at the rate of mass, that is

L = m\Delta V,

Where,

m = Mass

\Delta V = Change in Velocity

This change in velocity can be expressed as,

L = m(v_2-v_1)

L = 0.45*(12.8 - 3.2)

L = 0.45*9.6

L= 4.32 Kg.m/s

Therefore the magnitude of the impulse is 4.32 Kg.m/s

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Trace fossils are recognized as evidence of which pre-existing life? plants plants and animals neither plants nor animals animal
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Answer:

a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.

Explanation:

Trace fossils are the indirect evidence of life in the past, such as the footprints, tracks, burrows, borings, and feces left behind by animals, rather than the preserved remains of the actual animal body itself.

Fossil is the naturally preserved remains of plants and animals which somehow get trapped in amber, hair, petrified wood, oil, coal, and DNA remnants.

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2 years ago
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An object is thrown with an initial speed v near the surface of Earth. Assume that air resistance is negligible and the gravitat
IgorLugansk [536]

Answer:

E. downward and constant

Explanation:

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2 years ago
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What is the equation describing the motion of a mass on the end of a spring which is stretched 8.8 cm from equilibrium and then
Darya [45]

Answer:

y = -8.37 cm

Explanation:

As we know that the equation of SHM is given as

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here we know that

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here we have

T = 0.66 s

now we have

\omega = \frac{2\pi}{0.66}

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now we have

y = (8.8 cm) cos(3\pi t)

now at t = 2.3 s we have

y = (8.8 cm) cos(3\pi \times 2.3)

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Explanation:

a) m1u1 + m2u2 = v(m1+m2)

1000×6 + 5000×0 = v(1000+5000)

6000 + 0 = 6000v

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b) ½ ×(m1+m2)v²

= 0.5×6000×1²

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=3000J

=3KJ

c) solve for b4 collision and compare

Goodluck

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Answer:

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