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3 years ago

Please help me, I don’t know the answer

Physics

2 answers:

AfilCa [17]3 years ago

6 0

Answer:

I'm pretty sure it is D:2.

Explanation:

Since potential energy is basically something sitting still. If not C then D.

den301095 [7]3 years ago

3 0

I also think it’s D

Hopefully we helped

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The collision between a hammer and a nail can be considered to be approximately elastic. estimate the kinetic energy acquired by

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Here we can use momentum conservation as in this type of collision there is no external force on it

$m_1v_{1i} + m_2v_{2i} = m_1 v_{1f} + m_2v_{2f}$

now here we can say

$m_1 = 10 g$

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now here we can say

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now by coefficient of restitution

for elastic collision we know that e = 1

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$v_{2f} - v_{1f} = 0 - 3.5$

now by solving the two equation

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$v_{1f} = v_{2f} + 3.5 = 3.375 + 3.5 = 6.875 m/s$

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2 years ago

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A fisherman noticed that a wave strikes the boat side every 5 seconds. The distance between two consecutive crest is 1.5m. What

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3 years ago

1. Calculate the momentum of each car before the collision: SHOW YOUR WORK!

a_sh-v [17]

Answer:

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Momentum = mass × velocity

For the red car

Mass = 1kg

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Momentum of the red car = 1kg × 5m/s

Momentum of the red car = 5kgm/s

For the blue car.

Mass = 1kg

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Momentum = 1kg ×0m/s

Momentum of the blue car = 0kgm/s

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3 years ago

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SVETLANKA909090 [29]

Answer:

$F_b$ = 1647.92 N

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Given:

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under the motionless condition, the net moment about elbow is zero

thus,

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3 years ago

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