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mestny [16]
3 years ago
8

PLEASE HELP ME WILL GIVE BRAINLIEST

Physics
2 answers:
weqwewe [10]3 years ago
7 0

Answer:

A.always changing

Explanation:

Mekhanik [1.2K]3 years ago
7 0

Answer:

always equal

The horizontal and vertical components of a projectile's velocity is always equal. The horizontal and vertical have different charges.

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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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Answer:

The bullet's initial speed is 243.21 m/s.

Explanation:

Given that,

Mass of the bullet, m_b=11\ g=0.011\ kg

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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,

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7 0
3 years ago
A student pushes on a 20.0 kg box with a force of 50 N at an angle of 30° below the horizontal. The box accelerates at a rate of
PtichkaEL [24]

Answer:

225 N

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"Below the horizontal" means he's pushing down at an angle.

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