3 years ago

The soccer game begins with a in the center of the field

Physics

1 answer:

blagie [28]3 years ago

6 0

It begins with a kick-off

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3 years ago

A bullet of mass 11 g strikes a ballistic pendulum of mass 1.9 kg. The center of mass of the pendulum rises a vertical distance

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Explanation:

Given that,

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Mass of the pendulum, $m_p=19\ kg$

The center of mass of the pendulum rises a vertical distance of 10 cm.

We need to find the bullet's initial speed if it is assumed that the bullet remains embedded in the pendulum. Let it is v. In this case, the energy of the system remains conserved. The kinetic energy of the bullet gets converted to potential energy for the whole system. So,

$\dfrac{1}{2}(m_b+m_p)V^2 =(m_b+m_p)gh\\\\V=\sqrt{2gh} \ .................(1)$

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Now using conservation of momentum as :

$m_bv=(m_p+m_b)V$

Put the value of V from equation (1) in above equation as :

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So, the bullet's initial speed is 243.21 m/s.

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3 years ago

The soccer game begins with a ______ ______ in the center of the field

The soccer game begins with a in the center of the field