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Juli2301 [7.4K]
3 years ago
11

Two football players collide head-on in midair while trying to catch a thrown football and cling together. The first player is 9

4 kg and has an initial velocity of 6 m/s, while the second player is 116 kg and has an initial velocity of -5 m/sn the next three parts, (d) through (f), justify that friction could be ignored compared to the forces of collision by considering the change in momentum of the first player. Let's assume that the collision lasts for 10ms. Calculate the force on the first player by the second player during the collision
Physics
1 answer:
QveST [7]3 years ago
3 0

Answer:

F = 57116.2 N

Explanation:

As we know that during collision the force between two players due to all external factors is very small or negligible

So we can use momentum conservation to find the final common speed

m_1v_1 + m_2v_2 = (m_1 + m_2) v

so we have

94(6) + (116)(-5) = (94 + 116) v

v = -0.076 m/s

now we can find acceleration which is defined as rate of change in velocity

So it is given as

a = \frac{v_F - v_i}{\Delta t}

a = \frac{-0.076 - 6}{10 \times 10^{-3}}

a = - 607.62 m/s^2

Now force on first player is given as

F = ma

F = 94 \times (607.62)

F = 57116.2 N

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An electric heater is operated by applying a potential difference of 78.0 V across a nichrome wire of total resistance 7.00 Ω. a
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PART A)

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2 years ago
The wavelength of a wave is the horizontal distance from a ________ to an adjacent ________.
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A box is held at rest by two ropes that form 30° angles with the vertical. The tension T in either rope is 42 N. What is the wei
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Answer:

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